If a board of county commissioners has required by ordinance that a certain distance be maintained between similar businesses, and the board or any other officer or body so authorized grants a variance for the location of any particular business that is relocated because of the county’s acquisition of the former site of that particular business, any other similar business being conducted at the time of the relocation which is affected by the exercise of the variance must be granted a license to engage in business that is equivalent to the license granted to the relocated business.