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Finding the Fourth Proportional to 99,469.90, 149,206.43 and 55,376.90

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Solution

The fourth proportional to 99,469.90, 149,206.43 and 55,376.90 is: 83,066.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,469.90 : 149,206.43 = 55,376.90 : x
  2. Step 2: Convert to fraction form
    99,469.90/149,206.43 = 55,376.90/x
  3. Step 3: Cross multiply
    99,469.90x = 149,206.43 × 55,376.90
  4. Step 4: Simplify right side
    99,469.90x = 8,262,589,553.47
  5. Step 5: Solve for x
    x = 8,262,589,553.47/99,469.90
  6. Step 6: Final answer
    x = 83,066.23

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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.