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Finding the Fourth Proportional to 629,912,961.20, 944,869,441.80 and 499,816,204.40

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Solution

The fourth proportional to 629,912,961.20, 944,869,441.80 and 499,816,204.40 is: 749,724,306.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,912,961.20 : 944,869,441.80 = 499,816,204.40 : x
  2. Step 2: Convert to fraction form
    629,912,961.20/944,869,441.80 = 499,816,204.40/x
  3. Step 3: Cross multiply
    629,912,961.20x = 944,869,441.80 × 499,816,204.40
  4. Step 4: Simplify right side
    629,912,961.20x = 472,261,058,054,022,656
  5. Step 5: Solve for x
    x = 472,261,058,054,022,656/629,912,961.20
  6. Step 6: Final answer
    x = 749,724,306.60

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Double scale
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1.5x scale

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.