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Finding the Fourth Proportional to 79,200.43, 118,517.65 and 68,793.05

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Solution

The fourth proportional to 79,200.43, 118,517.65 and 68,793.05 is: 102,943.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200.43 : 118,517.65 = 68,793.05 : x
  2. Step 2: Convert to fraction form
    79,200.43/118,517.65 = 68,793.05/x
  3. Step 3: Cross multiply
    79,200.43x = 118,517.65 × 68,793.05
  4. Step 4: Simplify right side
    79,200.43x = 8,153,190,622.33
  5. Step 5: Solve for x
    x = 8,153,190,622.33/79,200.43
  6. Step 6: Final answer
    x = 102,943.77

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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.