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Finding the Fourth Proportional to 98,843.97, 136,414.45 and 56,408.88

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Solution

The fourth proportional to 98,843.97, 136,414.45 and 56,408.88 is: 77,849.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,843.97 : 136,414.45 = 56,408.88 : x
  2. Step 2: Convert to fraction form
    98,843.97/136,414.45 = 56,408.88/x
  3. Step 3: Cross multiply
    98,843.97x = 136,414.45 × 56,408.88
  4. Step 4: Simplify right side
    98,843.97x = 7,694,986,058.27
  5. Step 5: Solve for x
    x = 7,694,986,058.27/98,843.97
  6. Step 6: Final answer
    x = 77,849.83

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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.