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Finding the Fourth Proportional to 141,712.88, 212,069.87 and 88,429.95

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Solution

The fourth proportional to 141,712.88, 212,069.87 and 88,429.95 is: 132,333.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,712.88 : 212,069.87 = 88,429.95 : x
  2. Step 2: Convert to fraction form
    141,712.88/212,069.87 = 88,429.95/x
  3. Step 3: Cross multiply
    141,712.88x = 212,069.87 × 88,429.95
  4. Step 4: Simplify right side
    141,712.88x = 18,753,328,000.61
  5. Step 5: Solve for x
    x = 18,753,328,000.61/141,712.88
  6. Step 6: Final answer
    x = 132,333.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.