Unit test fails with release config but passes in debug mode

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My unit test:

[TestMethod]
public void LogAdjustment()
{
    //arrange
    var mrNumber = 123456;
    var adjustmentAmount = 2.0f;
    var startingWeight = 13.0f;
    var expectedWeight = startingWeight + adjustmentAmount;
    var startingRecord = new MasterRecord
    {
        Number = mrNumber,
        AcceptableNetWeight = startingWeight,
        QVolume = startingWeight / 1.031f
    };
    var poolRecord = new PoolRecord { MasterNumber = mrNumber };

    var iStoreMock = new Mock<IStore>();
    iStoreMock.Setup(s => s.GetReceipt(mrNumber)).Returns(startingRecord);
    iStoreMock.Setup(s => s.GetPool(mrNumber)).Returns(poolRecord);
    iStoreMock.Setup(s => s.RecordReceipt(It.Is<MasterRecord>(r => r.AcceptableNetWeight == expectedWeight && r.QVolume == expectedWeight / 1.031f));
    iStoreMock.Setup(s => s.GetReceipt(mrNumber)).Returns(startingRecord);

    var recorder = new ReceiptRecorder(iStoreMock.Object);
    var adjustment = new Adjustment { LotId = _clearAcceptableNumber, Adjustment = adjustmentAmount };

    //act
    recorder.LogAdjustment(adjustment);

    //assert
    iStoreMock.VerifyAll();
}

The above test fails with the following error in Release mode:

Moq.MockVerificationException: The following setups were not matched:
IStoreMock s => s.RecordReceipt(It.Is(r => r.AcceptableNetWeight == 15 && r.QVolume == 14.54898))

This exact same test passes when I run it in Debug mode.

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PriyaNand On BEST ANSWER

As suggested by Ken Y-N, rounding the float numbers in the setup helped in passing the unit tests in both Debug and Release modes.

iStoreMock.Setup(s => s.RecordReceipt(
   It.Is<MasterRecord>(r => r.AcceptableNetWeight == expectedWeight 
       && Math.Round(r.QuarantineVolume, 5) == Math.Round((expectedWeight/1.031f), 5)));