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Finding the Fourth Proportional to 131,990.75, 197,874.87 and 89,752.49

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Solution

The fourth proportional to 131,990.75, 197,874.87 and 89,752.49 is: 134,553.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,990.75 : 197,874.87 = 89,752.49 : x
  2. Step 2: Convert to fraction form
    131,990.75/197,874.87 = 89,752.49/x
  3. Step 3: Cross multiply
    131,990.75x = 197,874.87 × 89,752.49
  4. Step 4: Simplify right side
    131,990.75x = 17,759,761,301.55
  5. Step 5: Solve for x
    x = 17,759,761,301.55/131,990.75
  6. Step 6: Final answer
    x = 134,553.08

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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.