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Finding the Fourth Proportional to 79,372.60, 119,035.14 and 31,972.48

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Solution

The fourth proportional to 79,372.60, 119,035.14 and 31,972.48 is: 47,949.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,372.60 : 119,035.14 = 31,972.48 : x
  2. Step 2: Convert to fraction form
    79,372.60/119,035.14 = 31,972.48/x
  3. Step 3: Cross multiply
    79,372.60x = 119,035.14 × 31,972.48
  4. Step 4: Simplify right side
    79,372.60x = 3,805,848,632.95
  5. Step 5: Solve for x
    x = 3,805,848,632.95/79,372.60
  6. Step 6: Final answer
    x = 47,949.15

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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.