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Finding the Fourth Proportional to 614,337,687.20, 921,506,530.80 and 614,337,687.20

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Solution

The fourth proportional to 614,337,687.20, 921,506,530.80 and 614,337,687.20 is: 921,506,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,337,687.20 : 921,506,530.80 = 614,337,687.20 : x
  2. Step 2: Convert to fraction form
    614,337,687.20/921,506,530.80 = 614,337,687.20/x
  3. Step 3: Cross multiply
    614,337,687.20x = 921,506,530.80 × 614,337,687.20
  4. Step 4: Simplify right side
    614,337,687.20x = 566,116,190,871,367,552
  5. Step 5: Solve for x
    x = 566,116,190,871,367,552/614,337,687.20
  6. Step 6: Final answer
    x = 921,506,530.80

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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.