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Finding the Fourth Proportional to 629,857,998.90, 944,786,998.35 and 220,955,483.70

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Solution

The fourth proportional to 629,857,998.90, 944,786,998.35 and 220,955,483.70 is: 331,433,225.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,998.90 : 944,786,998.35 = 220,955,483.70 : x
  2. Step 2: Convert to fraction form
    629,857,998.90/944,786,998.35 = 220,955,483.70/x
  3. Step 3: Cross multiply
    629,857,998.90x = 944,786,998.35 × 220,955,483.70
  4. Step 4: Simplify right side
    629,857,998.90x = 208,755,868,213,895,360
  5. Step 5: Solve for x
    x = 208,755,868,213,895,360/629,857,998.90
  6. Step 6: Final answer
    x = 331,433,225.55

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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.