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Finding the Fourth Proportional to 61,672.97, 92,511.68 and 31,679.12

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Solution

The fourth proportional to 61,672.97, 92,511.68 and 31,679.12 is: 47,519.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,672.97 : 92,511.68 = 31,679.12 : x
  2. Step 2: Convert to fraction form
    61,672.97/92,511.68 = 31,679.12/x
  3. Step 3: Cross multiply
    61,672.97x = 92,511.68 × 31,679.12
  4. Step 4: Simplify right side
    61,672.97x = 2,930,688,685.01
  5. Step 5: Solve for x
    x = 2,930,688,685.01/61,672.97
  6. Step 6: Final answer
    x = 47,519.82

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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.