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Finding the Fourth Proportional to 148,064.50, 204,333.87 and 80,996.50

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Solution

The fourth proportional to 148,064.50, 204,333.87 and 80,996.50 is: 111,777.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,064.50 : 204,333.87 = 80,996.50 : x
  2. Step 2: Convert to fraction form
    148,064.50/204,333.87 = 80,996.50/x
  3. Step 3: Cross multiply
    148,064.50x = 204,333.87 × 80,996.50
  4. Step 4: Simplify right side
    148,064.50x = 16,550,328,301.46
  5. Step 5: Solve for x
    x = 16,550,328,301.46/148,064.50
  6. Step 6: Final answer
    x = 111,777.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.