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Finding the Fourth Proportional to 112,909.88, 155,822.62 and 62,608.88

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Solution

The fourth proportional to 112,909.88, 155,822.62 and 62,608.88 is: 86,404.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,909.88 : 155,822.62 = 62,608.88 : x
  2. Step 2: Convert to fraction form
    112,909.88/155,822.62 = 62,608.88/x
  3. Step 3: Cross multiply
    112,909.88x = 155,822.62 × 62,608.88
  4. Step 4: Simplify right side
    112,909.88x = 9,755,878,937.75
  5. Step 5: Solve for x
    x = 9,755,878,937.75/112,909.88
  6. Step 6: Final answer
    x = 86,404.12

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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.