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Finding the Fourth Proportional to 367,501.20, 551,251.80 and 320,845.20

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Solution

The fourth proportional to 367,501.20, 551,251.80 and 320,845.20 is: 481,267.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,501.20 : 551,251.80 = 320,845.20 : x
  2. Step 2: Convert to fraction form
    367,501.20/551,251.80 = 320,845.20/x
  3. Step 3: Cross multiply
    367,501.20x = 551,251.80 × 320,845.20
  4. Step 4: Simplify right side
    367,501.20x = 176,866,494,021.36
  5. Step 5: Solve for x
    x = 176,866,494,021.36/367,501.20
  6. Step 6: Final answer
    x = 481,267.80

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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.