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Finding the Fourth Proportional to 220,591.98, 330,997.32 and 87,469.38

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Solution

The fourth proportional to 220,591.98, 330,997.32 and 87,469.38 is: 131,247.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,591.98 : 330,997.32 = 87,469.38 : x
  2. Step 2: Convert to fraction form
    220,591.98/330,997.32 = 87,469.38/x
  3. Step 3: Cross multiply
    220,591.98x = 330,997.32 × 87,469.38
  4. Step 4: Simplify right side
    220,591.98x = 28,952,130,362.06
  5. Step 5: Solve for x
    x = 28,952,130,362.06/220,591.98
  6. Step 6: Final answer
    x = 131,247.43

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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.