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Finding the Fourth Proportional to 146,755.10, 220,132.65 and 76,618.10

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Solution

The fourth proportional to 146,755.10, 220,132.65 and 76,618.10 is: 114,927.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,755.10 : 220,132.65 = 76,618.10 : x
  2. Step 2: Convert to fraction form
    146,755.10/220,132.65 = 76,618.10/x
  3. Step 3: Cross multiply
    146,755.10x = 220,132.65 × 76,618.10
  4. Step 4: Simplify right side
    146,755.10x = 16,866,145,390.97
  5. Step 5: Solve for x
    x = 16,866,145,390.97/146,755.10
  6. Step 6: Final answer
    x = 114,927.15

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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.