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Finding the Fourth Proportional to 123,610.20, 170,581.14 and 67,021.16

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Solution

The fourth proportional to 123,610.20, 170,581.14 and 67,021.16 is: 92,488.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,610.20 : 170,581.14 = 67,021.16 : x
  2. Step 2: Convert to fraction form
    123,610.20/170,581.14 = 67,021.16/x
  3. Step 3: Cross multiply
    123,610.20x = 170,581.14 × 67,021.16
  4. Step 4: Simplify right side
    123,610.20x = 11,432,545,876.92
  5. Step 5: Solve for x
    x = 11,432,545,876.92/123,610.20
  6. Step 6: Final answer
    x = 92,488.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.