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Finding the Fourth Proportional to 123,755.65, 170,781.77 and 67,167.01

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Solution

The fourth proportional to 123,755.65, 170,781.77 and 67,167.01 is: 92,689.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,755.65 : 170,781.77 = 67,167.01 : x
  2. Step 2: Convert to fraction form
    123,755.65/170,781.77 = 67,167.01/x
  3. Step 3: Cross multiply
    123,755.65x = 170,781.77 × 67,167.01
  4. Step 4: Simplify right side
    123,755.65x = 11,470,900,517.57
  5. Step 5: Solve for x
    x = 11,470,900,517.57/123,755.65
  6. Step 6: Final answer
    x = 92,689.91

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1.5x scale

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.