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Mathematics 17 Online
Aubree:

The following three proportions can all be used to solve the problem about Caroline's salary. Explain why the solutions to each proportion are the same. 36/4 = x/7 4/36 = 7/x 36/x = 4/7

countrygirl68:

Each proportion is written so the units are in the corresponding positions. The cross products of all the proportions result in the equation 4x = 252

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