Solve the following problem using proportions. The Wort Fssex School Board employs 348 teachers for the 7412 students registered in the board's schools in the current year. The enrolment forecast for next yeat is 7180 students. Assuming the same student-teacher ratio for the next year, how many additional teaching positions must the board fill? (Do not round your intermediote calculations. Round your answer to the nearest whole value.) Number of additional teaching positions