Practicing Success
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CUET
General Test
Numerical Ability
Ratios
Find a fourth proportional to the numbers 13 , 52 , 21 .
84
72
87
90
Fourth Proportional of a,b and c = \(\frac{b\;×\;c}{a}\)
Fourth Proportional of 13 ,52 and 21 = \(\frac{52\;×\;21}{13}\) = 84