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Finding the Fourth Proportional to 629,857,415.60, 944,786,123.40 and 432,586,516.40

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Solution

The fourth proportional to 629,857,415.60, 944,786,123.40 and 432,586,516.40 is: 648,879,774.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,415.60 : 944,786,123.40 = 432,586,516.40 : x
  2. Step 2: Convert to fraction form
    629,857,415.60/944,786,123.40 = 432,586,516.40/x
  3. Step 3: Cross multiply
    629,857,415.60x = 944,786,123.40 × 432,586,516.40
  4. Step 4: Simplify right side
    629,857,415.60x = 408,701,737,864,666,496
  5. Step 5: Solve for x
    x = 408,701,737,864,666,496/629,857,415.60
  6. Step 6: Final answer
    x = 648,879,774.60

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Double scale
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Similar ratio
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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.