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Finding the Fourth Proportional to 869,876,722.30, 1,304,815,083.45 and 482,893,195.90

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Solution

The fourth proportional to 869,876,722.30, 1,304,815,083.45 and 482,893,195.90 is: 724,339,793.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,876,722.30 : 1,304,815,083.45 = 482,893,195.90 : x
  2. Step 2: Convert to fraction form
    869,876,722.30/1,304,815,083.45 = 482,893,195.90/x
  3. Step 3: Cross multiply
    869,876,722.30x = 1,304,815,083.45 × 482,893,195.90
  4. Step 4: Simplify right side
    869,876,722.30x = 630,086,325,705,695,744
  5. Step 5: Solve for x
    x = 630,086,325,705,695,744/869,876,722.30
  6. Step 6: Final answer
    x = 724,339,793.85

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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.