Demographic transition theory of population was proposed

116.90 ÷ (77.81 ÷ 6.06) + 6.32 = (15.12% of ?) ÷ 4.65² 

(29.98% of 9840) + ? + (19.899% of 8490) = 7560

(?)² + 6.11³ = 25.9² – 19.03

(8.86)² × (15.01)² ÷ √624.99 = 9^?

?% of (128.31 ÷ 15.97 × 75.011) = 419.98

? = 38.97² ÷ (3.99⁵ + 5.89 × 107.32) + 58.24% of (512.12 × 21.07)

44.89% of 600.25 + (29.98 × 5.67) + (√1940 – 10.29) = ?² 

19.89% of 449.67 + 14.67% of 299.89 - 9.89% of 99.79 = ?

64.889% of 399.879 + √? = 54.90% of 799.80 – 44.03% of 400.21

49.97% of 2016 – 37.99% of 1050 = ? – 47.98% of 5950