To what value must you adjust ${\mathbf{R}}_{\mathbf{3}}$to balance a Wheatstone bridge, if the unknown resistancerole="math" localid="1656392044601" ${\mathbf{R}}_{\mathbf{x}}\mathbf{is}\mathbf{}\mathbf{100}\mathbf{}\mathbf{\Omega }\mathbf{,}\mathbf{}{\mathbf{R}}_{\mathbf{1}}\mathbf{}\mathbf{is}\mathbf{}\mathbf{50}\mathbf{.}\mathbf{0}\mathbf{}\mathbf{\Omega }\mathbf{,}\mathbf{}\mathbf{and}\mathbf{}{\mathbf{R}}_{\mathbf{2}}\mathbf{}\mathbf{is}\mathbf{}\mathbf{175}\mathbf{}\mathbf{\Omega }$?

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