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Finding the Fourth Proportional to 141,711.88, 212,068.37 and 88,428.95

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Solution

The fourth proportional to 141,711.88, 212,068.37 and 88,428.95 is: 132,331.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,711.88 : 212,068.37 = 88,428.95 : x
  2. Step 2: Convert to fraction form
    141,711.88/212,068.37 = 88,428.95/x
  3. Step 3: Cross multiply
    141,711.88x = 212,068.37 × 88,428.95
  4. Step 4: Simplify right side
    141,711.88x = 18,752,984,005.84
  5. Step 5: Solve for x
    x = 18,752,984,005.84/141,711.88
  6. Step 6: Final answer
    x = 132,331.77

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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.