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Finding the Fourth Proportional to 89,792.88, 123,868.65 and 68,535.24

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Solution

The fourth proportional to 89,792.88, 123,868.65 and 68,535.24 is: 94,543.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,792.88 : 123,868.65 = 68,535.24 : x
  2. Step 2: Convert to fraction form
    89,792.88/123,868.65 = 68,535.24/x
  3. Step 3: Cross multiply
    89,792.88x = 123,868.65 × 68,535.24
  4. Step 4: Simplify right side
    89,792.88x = 8,489,367,656.23
  5. Step 5: Solve for x
    x = 8,489,367,656.23/89,792.88
  6. Step 6: Final answer
    x = 94,543.88

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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.