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2015-03-06T20:27:54+08:00

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The proportions will be: 
6:9=_:12
  I
2:3

Find a number that when you pair it with 12, the answer will also be 2:3.
8:12 is equal to 2:3. So the answer is 8.

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2015-03-06T23:02:33+08:00

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Cross Multiply
 \frac{6}{9}     \frac{x}{12}

72 = 9x
 \frac{72}{9}  \frac{9x}{9}

8 = x

8 feet = answer
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