\(\frac{{{{\rm{x}}^2}}}{{{\rm{by\;}} + {\rm{\;cz}}}} = \frac{{{{\rm{y}}^2}}}{{{\rm{cz\;}} + {\rm{\;ax}}}} = \frac{{{{\rm{z}}^2}}}{{{\rm{ax\;}} + {\rm{\;by}}}} = 3.5{\rm{\;}}\) అయిన \(\frac{{\rm{a}}}{{{\rm{a\;}} + {\rm{\;x}}}}{\rm{\;}} + \frac{{\rm{b}}}{{{\rm{b\;}} + {\rm{\;x}}}} + \frac{{\rm{c}}}{{{\rm{c\;}} + {\rm{\;x}}}}{\rm{\;}}\) విలువను కనుగొనండి.