Letters that make proportional tax
a, o, l, n, p, r, t, i, x are letters that make 'proportional tax'
Words within proportional tax
proportional, OR, proportion, ti, PR, PO, Ro, on, pro, port, portion, prop, ax, AL, Io, ion, Po, Al, Pr, Na, Ta, Ti, tax are words within 'proportional tax'