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Finding the Fourth Proportional to 148,542.99, 204,989.42 and 80,559.94

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Solution

The fourth proportional to 148,542.99, 204,989.42 and 80,559.94 is: 111,172.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,542.99 : 204,989.42 = 80,559.94 : x
  2. Step 2: Convert to fraction form
    148,542.99/204,989.42 = 80,559.94/x
  3. Step 3: Cross multiply
    148,542.99x = 204,989.42 × 80,559.94
  4. Step 4: Simplify right side
    148,542.99x = 16,513,935,375.83
  5. Step 5: Solve for x
    x = 16,513,935,375.83/148,542.99
  6. Step 6: Final answer
    x = 111,172.77

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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.