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Q.

The third proportional to 12 and 18 is ____.


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Detailed Solution

The third proportional to 12 and 18 is 27.
We have to find the third proportional.
Apply condition for continued proportionality,
a:b::b:c
a b = b c
Substitute the known values within the formula,
12 18 = 18 c
c= 18×18 12
By solving the above equation,
=9×3
=27
Hence the third proportional is 27 .
 
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