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Q.

The third proportional to 4 and 12 is ____.


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Detailed Solution

The third proportional to 4 and 12 is 36.
It is given that the numbers in proportion are 4,12 .
We have to find the third proportion of the numbers.
Apply condition for continued proportionality is,
a:b::b:c
a b = b c
Substitute the known values within the formula,
4 12 = 12 c
c= 12×12 4
By solving the above equation,
=3×12
=36
Hence the third proportional is 36. .
 
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The third proportional to 4 and 12 is ____.