In a double$-$slit experiment the distance between slits is $7\mathrm{.}2$ mm and the slits are $1\mathrm{.}0$ m from the screen. Two interference patterns can be seen on the screen: one due to light of wavelength $480$ nm $,$ and the other due to light of wavelength $630$ nm $.$ What is the separation in meters on the screen between the $m=4$ bright fringes of the two interference patterns?

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