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Finding the Fourth Proportional to 5,865,863.10, 8,798,794.65 and 5,156,691.90

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Solution

The fourth proportional to 5,865,863.10, 8,798,794.65 and 5,156,691.90 is: 7,735,037.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,865,863.10 : 8,798,794.65 = 5,156,691.90 : x
  2. Step 2: Convert to fraction form
    5,865,863.10/8,798,794.65 = 5,156,691.90/x
  3. Step 3: Cross multiply
    5,865,863.10x = 8,798,794.65 × 5,156,691.90
  4. Step 4: Simplify right side
    5,865,863.10x = 45,372,673,101,418.34
  5. Step 5: Solve for x
    x = 45,372,673,101,418.34/5,865,863.10
  6. Step 6: Final answer
    x = 7,735,037.85

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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.