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Finding the Fourth Proportional to 67,770.97, 101,638.69 and 20,373.37

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Solution

The fourth proportional to 67,770.97, 101,638.69 and 20,373.37 is: 30,554.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,770.97 : 101,638.69 = 20,373.37 : x
  2. Step 2: Convert to fraction form
    67,770.97/101,638.69 = 20,373.37/x
  3. Step 3: Cross multiply
    67,770.97x = 101,638.69 × 20,373.37
  4. Step 4: Simplify right side
    67,770.97x = 2,070,722,332.66
  5. Step 5: Solve for x
    x = 2,070,722,332.66/67,770.97
  6. Step 6: Final answer
    x = 30,554.71

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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.