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Finding the Fourth Proportional to 629,857,662.60, 944,786,493.90 and 220,766,190.60

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Solution

The fourth proportional to 629,857,662.60, 944,786,493.90 and 220,766,190.60 is: 331,149,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,662.60 : 944,786,493.90 = 220,766,190.60 : x
  2. Step 2: Convert to fraction form
    629,857,662.60/944,786,493.90 = 220,766,190.60/x
  3. Step 3: Cross multiply
    629,857,662.60x = 944,786,493.90 × 220,766,190.60
  4. Step 4: Simplify right side
    629,857,662.60x = 208,576,915,188,633,120
  5. Step 5: Solve for x
    x = 208,576,915,188,633,120/629,857,662.60
  6. Step 6: Final answer
    x = 331,149,285.90

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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.