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Finding the Fourth Proportional to 99,331.98, 148,997.97 and 29,211.90

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Solution

The fourth proportional to 99,331.98, 148,997.97 and 29,211.90 is: 43,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,331.98 : 148,997.97 = 29,211.90 : x
  2. Step 2: Convert to fraction form
    99,331.98/148,997.97 = 29,211.90/x
  3. Step 3: Cross multiply
    99,331.98x = 148,997.97 × 29,211.90
  4. Step 4: Simplify right side
    99,331.98x = 4,352,513,799.84
  5. Step 5: Solve for x
    x = 4,352,513,799.84/99,331.98
  6. Step 6: Final answer
    x = 43,817.85

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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.