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Finding the Fourth Proportional to 73,912.18, 101,983.70 and 42,072.70

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Solution

The fourth proportional to 73,912.18, 101,983.70 and 42,072.70 is: 58,051.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,912.18 : 101,983.70 = 42,072.70 : x
  2. Step 2: Convert to fraction form
    73,912.18/101,983.70 = 42,072.70/x
  3. Step 3: Cross multiply
    73,912.18x = 101,983.70 × 42,072.70
  4. Step 4: Simplify right side
    73,912.18x = 4,290,729,614.99
  5. Step 5: Solve for x
    x = 4,290,729,614.99/73,912.18
  6. Step 6: Final answer
    x = 58,051.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.