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Finding the Fourth Proportional to 67,691.70, 101,548.49 and 20,944.58

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Solution

The fourth proportional to 67,691.70, 101,548.49 and 20,944.58 is: 31,420.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,691.70 : 101,548.49 = 20,944.58 : x
  2. Step 2: Convert to fraction form
    67,691.70/101,548.49 = 20,944.58/x
  3. Step 3: Cross multiply
    67,691.70x = 101,548.49 × 20,944.58
  4. Step 4: Simplify right side
    67,691.70x = 2,126,889,860.22
  5. Step 5: Solve for x
    x = 2,126,889,860.22/67,691.70
  6. Step 6: Final answer
    x = 31,420.25

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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.