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Finding the Fourth Proportional to 367,710.80, 551,436.60 and 131,061.20

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Solution

The fourth proportional to 367,710.80, 551,436.60 and 131,061.20 is: 196,545.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,710.80 : 551,436.60 = 131,061.20 : x
  2. Step 2: Convert to fraction form
    367,710.80/551,436.60 = 131,061.20/x
  3. Step 3: Cross multiply
    367,710.80x = 551,436.60 × 131,061.20
  4. Step 4: Simplify right side
    367,710.80x = 72,271,942,519.92
  5. Step 5: Solve for x
    x = 72,271,942,519.92/367,710.80
  6. Step 6: Final answer
    x = 196,545.61

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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.