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lucas francke
Picture of lucas francke
Posted
the ratio of the lenght of a side of one square to that of another square is 3:4. a side of the smaller square is 9 cm. find the length of a side of the larger square.
 
Posts: 2 | Location: Kuna | Registered: 11-26-07Reply With QuoteEdit or Delete MessageReport This Post
DorianGreyed
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I am not sure I remember the form, but try to look at the problem this way.

3 is to 4 what 9 is to ?

OR

3:4 = 9:?

OR

3/4 = 9/X
 
Posts: 17481 | Location: Lincoln Place, Granite City, IL, USA | Registered: 06-03-02Reply With QuoteEdit or Delete MessageReport This Post
frankvan
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Also, if you haven't reached the point where you can solve the equation for X, and set up as DG has in proportion form:
A : B = C : D The rule is The product of the means (B and C) is equal to the product of the extremes (A and D) So in your case 4x9=3X, so 36=3X, X=36/3=12.
 
Posts: 7121 | Location: Baltimore, MD, U.S.A | Registered: 06-03-02Reply With QuoteEdit or Delete MessageReport This Post
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