111.4.If a municipality referred to in any of sections 4 to 6, 8 or 9 of the Act respecting the exercise of certain municipal powers in certain urban agglomerations (chapter E-20.001) could, under section 98, exercise a power provided for in section 111 or 111.2, that power is to be exercised by the central municipality within the meaning of section 15 of that Act and is considered an agglomeration power.