If \( a, b, c \) are real and \( a^{2}+16 b^{2}+25 c^{2}-4 a b-20 b c-5 a c=0 \) then find the r...

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If \( a, b, c \) are real and \( a^{2}+16 b^{2}+25 c^{2}-4 a b-20 b c-5 a c=0 \) then find the ratio of \( a, b \) and \( c \).
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