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Finding the Fourth Proportional to 91,955,620.80, 137,933,431.20 and 83,452,564.80

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Solution

The fourth proportional to 91,955,620.80, 137,933,431.20 and 83,452,564.80 is: 125,178,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,955,620.80 : 137,933,431.20 = 83,452,564.80 : x
  2. Step 2: Convert to fraction form
    91,955,620.80/137,933,431.20 = 83,452,564.80/x
  3. Step 3: Cross multiply
    91,955,620.80x = 137,933,431.20 × 83,452,564.80
  4. Step 4: Simplify right side
    91,955,620.80x = 11,510,898,605,304,340
  5. Step 5: Solve for x
    x = 11,510,898,605,304,340/91,955,620.80
  6. Step 6: Final answer
    x = 125,178,847.20

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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.