Home / 20,611,920.80-30,917,881.20-20,139,528.80

Finding the Fourth Proportional to 20,611,920.80, 30,917,881.20 and 20,139,528.80

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Solution

The fourth proportional to 20,611,920.80, 30,917,881.20 and 20,139,528.80 is: 30,209,293.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611,920.80 : 30,917,881.20 = 20,139,528.80 : x
  2. Step 2: Convert to fraction form
    20,611,920.80/30,917,881.20 = 20,139,528.80/x
  3. Step 3: Cross multiply
    20,611,920.80x = 30,917,881.20 × 20,139,528.80
  4. Step 4: Simplify right side
    20,611,920.80x = 622,671,558,862,378.62
  5. Step 5: Solve for x
    x = 622,671,558,862,378.62/20,611,920.80
  6. Step 6: Final answer
    x = 30,209,293.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.