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Finding the Fourth Proportional to 367,218.40, 551,605.20 and 353,999.20

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Solution

The fourth proportional to 367,218.40, 551,605.20 and 353,999.20 is: 531,748.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,218.40 : 551,605.20 = 353,999.20 : x
  2. Step 2: Convert to fraction form
    367,218.40/551,605.20 = 353,999.20/x
  3. Step 3: Cross multiply
    367,218.40x = 551,605.20 × 353,999.20
  4. Step 4: Simplify right side
    367,218.40x = 195,267,799,515.84
  5. Step 5: Solve for x
    x = 195,267,799,515.84/367,218.40
  6. Step 6: Final answer
    x = 531,748.41

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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.