Resistance of a conductivity cell (cell constant $129 \mathrm{~m}^{-1}$ ) filled with 74.5 ppm solution of KCl is $100 \Omega$ (labeled as solution 1). When the same cell is filled with KCl solution of 149 ppm , the resistance is $50 \Omega$ (labeled as solution 2). The ratio of molar conductivity of solution 1 and solution 2 is i.e. $\frac{\Lambda_1}{\Lambda_2}=x \times 10^{-3}$. The value of $x$ is $\_\_\_\_$ . (Nearest integer) Given, molar mass of KC1 is $74.5 \mathrm{~g} \mathrm{~mol}^{-1}$