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Finding the Fourth Proportional to 79,318.92, 118,959.90 and 23,147.22

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Solution

The fourth proportional to 79,318.92, 118,959.90 and 23,147.22 is: 34,715.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,318.92 : 118,959.90 = 23,147.22 : x
  2. Step 2: Convert to fraction form
    79,318.92/118,959.90 = 23,147.22/x
  3. Step 3: Cross multiply
    79,318.92x = 118,959.90 × 23,147.22
  4. Step 4: Simplify right side
    79,318.92x = 2,753,590,976.48
  5. Step 5: Solve for x
    x = 2,753,590,976.48/79,318.92
  6. Step 6: Final answer
    x = 34,715.44

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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.