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Finding the Fourth Proportional to 67,642.95, 101,480.94 and 47,691.39

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Solution

The fourth proportional to 67,642.95, 101,480.94 and 47,691.39 is: 71,548.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,642.95 : 101,480.94 = 47,691.39 : x
  2. Step 2: Convert to fraction form
    67,642.95/101,480.94 = 47,691.39/x
  3. Step 3: Cross multiply
    67,642.95x = 101,480.94 × 47,691.39
  4. Step 4: Simplify right side
    67,642.95x = 4,839,767,087.11
  5. Step 5: Solve for x
    x = 4,839,767,087.11/67,642.95
  6. Step 6: Final answer
    x = 71,548.73

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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.