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Finding the Fourth Proportional to 79,251.90, 118,865.10 and 29,320.56

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Solution

The fourth proportional to 79,251.90, 118,865.10 and 29,320.56 is: 43,976.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,251.90 : 118,865.10 = 29,320.56 : x
  2. Step 2: Convert to fraction form
    79,251.90/118,865.10 = 29,320.56/x
  3. Step 3: Cross multiply
    79,251.90x = 118,865.10 × 29,320.56
  4. Step 4: Simplify right side
    79,251.90x = 3,485,191,296.46
  5. Step 5: Solve for x
    x = 3,485,191,296.46/79,251.90
  6. Step 6: Final answer
    x = 43,976.12

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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.