If `a:b = c:d` then value of `(a^2+b^2)/(c^2+d^2)` is

If a : b = c : d then the value of (a^(2) + b^(2))/( c^(2) + d^(2))

If a : b = c : d = 1 : 6, then what is the value of (a^2+c^2)/(b^2+d^2) ?

If a+b=2c, then the value of (a)/(a-c)+(b)/(b-c) is (1)/(2)(b)1(c)2(d)3

If a+b+c=0, find the value of (a^(2))/((a^(2)-bc))+(b^(2))/((b^(2)-ca))+(c^(2))/((c^(2)-ab))*( a) 0 (b) 1(c)2(d)4

If a,b,c,d,e are positive real numbers such that,a+b+c+d+e=15 and ab^(2)c^(3)d^(4)e^(5)=(120)^(3).50 then the value of a^(2)+b^(2)+c^(2)+d^(2)+e^(2) is

If a,b,c,d are the side of a quadrilateral, then find the the minimuym value of (a^(2)+b^(2)+c^(2))/(d ^(2))

If a,b,c, and d are in H.P.then find the value of (a^(-2)-d^(2))/(b^(-2)-c^(2))

Let a,b,c,d and e be positive real numbers such that a+b+c+d+e=15 and ab^2c^3d^4e^5=(120)^3xx50 . Then the value of a^2+b^2+c^2+d^2+e^2 is ___________.