Question 42007
Use the formula: 
Part/Whole = %/100
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Plug-in the known values.  Plug-in "x" for the unknown value.
x/1200 = 15.5/100
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Cross multiply:
x/1200 = 15.5/100
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100x = (1200)(15.5)
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Solve for x:
x = (1200)(15.5)/100
x= 186 
Check the answer:
186/1200 = 15.5/100