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Finding the Fourth Proportional to 104,046.60, 156,069.90 and 72,553.80

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Solution

The fourth proportional to 104,046.60, 156,069.90 and 72,553.80 is: 108,830.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,046.60 : 156,069.90 = 72,553.80 : x
  2. Step 2: Convert to fraction form
    104,046.60/156,069.90 = 72,553.80/x
  3. Step 3: Cross multiply
    104,046.60x = 156,069.90 × 72,553.80
  4. Step 4: Simplify right side
    104,046.60x = 11,323,464,310.62
  5. Step 5: Solve for x
    x = 11,323,464,310.62/104,046.60
  6. Step 6: Final answer
    x = 108,830.70

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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.