The performers in a marching band move in straight rows, maintaining constant side-to-side spacing between them. Each row sweeps 90° through a circular arc when the band turns a corner. The radii of the paths followed by the marchers at the inner and outer ends of a row are 1.50 m and 7.50 m. If the innermost marcher in a row moves at 0.350 m/s, what is the speed of the outermost marcher?