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Finding the Fourth Proportional to 367,914.80, 551,872.20 and 339,921.20

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Solution

The fourth proportional to 367,914.80, 551,872.20 and 339,921.20 is: 509,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,914.80 : 551,872.20 = 339,921.20 : x
  2. Step 2: Convert to fraction form
    367,914.80/551,872.20 = 339,921.20/x
  3. Step 3: Cross multiply
    367,914.80x = 551,872.20 × 339,921.20
  4. Step 4: Simplify right side
    367,914.80x = 187,593,060,470.64
  5. Step 5: Solve for x
    x = 187,593,060,470.64/367,914.80
  6. Step 6: Final answer
    x = 509,881.80

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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.