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Finding the Fourth Proportional to 71,625,452.20, 107,438,178.30 and 71,625,452.20

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Solution

The fourth proportional to 71,625,452.20, 107,438,178.30 and 71,625,452.20 is: 107,438,178.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,625,452.20 : 107,438,178.30 = 71,625,452.20 : x
  2. Step 2: Convert to fraction form
    71,625,452.20/107,438,178.30 = 71,625,452.20/x
  3. Step 3: Cross multiply
    71,625,452.20x = 107,438,178.30 × 71,625,452.20
  4. Step 4: Simplify right side
    71,625,452.20x = 7,695,308,104,281,727
  5. Step 5: Solve for x
    x = 7,695,308,104,281,727/71,625,452.20
  6. Step 6: Final answer
    x = 107,438,178.30

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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.