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Finding the Fourth Proportional to 381,677,658.60, 572,516,487.90 and 136,311,348.90

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Solution

The fourth proportional to 381,677,658.60, 572,516,487.90 and 136,311,348.90 is: 204,467,023.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,677,658.60 : 572,516,487.90 = 136,311,348.90 : x
  2. Step 2: Convert to fraction form
    381,677,658.60/572,516,487.90 = 136,311,348.90/x
  3. Step 3: Cross multiply
    381,677,658.60x = 572,516,487.90 × 136,311,348.90
  4. Step 4: Simplify right side
    381,677,658.60x = 78,040,494,733,139,536
  5. Step 5: Solve for x
    x = 78,040,494,733,139,536/381,677,658.60
  6. Step 6: Final answer
    x = 204,467,023.35

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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.