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Finding the Fourth Proportional to 81,469.80, 122,204.70 and 59,016.60

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Solution

The fourth proportional to 81,469.80, 122,204.70 and 59,016.60 is: 88,524.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,469.80 : 122,204.70 = 59,016.60 : x
  2. Step 2: Convert to fraction form
    81,469.80/122,204.70 = 59,016.60/x
  3. Step 3: Cross multiply
    81,469.80x = 122,204.70 × 59,016.60
  4. Step 4: Simplify right side
    81,469.80x = 7,212,105,898.02
  5. Step 5: Solve for x
    x = 7,212,105,898.02/81,469.80
  6. Step 6: Final answer
    x = 88,524.90

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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.