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Finding the Fourth Proportional to 367,416.80, 551,449.20 and 217,469.60

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Solution

The fourth proportional to 367,416.80, 551,449.20 and 217,469.60 is: 326,396.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,416.80 : 551,449.20 = 217,469.60 : x
  2. Step 2: Convert to fraction form
    367,416.80/551,449.20 = 217,469.60/x
  3. Step 3: Cross multiply
    367,416.80x = 551,449.20 × 217,469.60
  4. Step 4: Simplify right side
    367,416.80x = 119,923,436,944.32
  5. Step 5: Solve for x
    x = 119,923,436,944.32/367,416.80
  6. Step 6: Final answer
    x = 326,396.17

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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.