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Finding the Fourth Proportional to 73,102,902.80, 109,654,354.20 and 70,977,138.80

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Solution

The fourth proportional to 73,102,902.80, 109,654,354.20 and 70,977,138.80 is: 106,465,708.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,102,902.80 : 109,654,354.20 = 70,977,138.80 : x
  2. Step 2: Convert to fraction form
    73,102,902.80/109,654,354.20 = 70,977,138.80/x
  3. Step 3: Cross multiply
    73,102,902.80x = 109,654,354.20 × 70,977,138.80
  4. Step 4: Simplify right side
    73,102,902.80x = 7,782,952,318,077,763
  5. Step 5: Solve for x
    x = 7,782,952,318,077,763/73,102,902.80
  6. Step 6: Final answer
    x = 106,465,708.20

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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.