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Finding the Fourth Proportional to 79,671.17, 119,432.94 and 27,043.76

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Solution

The fourth proportional to 79,671.17, 119,432.94 and 27,043.76 is: 40,540.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,671.17 : 119,432.94 = 27,043.76 : x
  2. Step 2: Convert to fraction form
    79,671.17/119,432.94 = 27,043.76/x
  3. Step 3: Cross multiply
    79,671.17x = 119,432.94 × 27,043.76
  4. Step 4: Simplify right side
    79,671.17x = 3,229,915,168.29
  5. Step 5: Solve for x
    x = 3,229,915,168.29/79,671.17
  6. Step 6: Final answer
    x = 40,540.58

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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.