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Finding the Fourth Proportional to 8,446.61, 12,672.20 and 3,701.90

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Solution

The fourth proportional to 8,446.61, 12,672.20 and 3,701.90 is: 5,553.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,446.61 : 12,672.20 = 3,701.90 : x
  2. Step 2: Convert to fraction form
    8,446.61/12,672.20 = 3,701.90/x
  3. Step 3: Cross multiply
    8,446.61x = 12,672.20 × 3,701.90
  4. Step 4: Simplify right side
    8,446.61x = 46,911,217.18
  5. Step 5: Solve for x
    x = 46,911,217.18/8,446.61
  6. Step 6: Final answer
    x = 5,553.85

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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.