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Finding the Fourth Proportional to 367,577.20, 551,365.80 and 131,186.80

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Solution

The fourth proportional to 367,577.20, 551,365.80 and 131,186.80 is: 196,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,577.20 : 551,365.80 = 131,186.80 : x
  2. Step 2: Convert to fraction form
    367,577.20/551,365.80 = 131,186.80/x
  3. Step 3: Cross multiply
    367,577.20x = 551,365.80 × 131,186.80
  4. Step 4: Simplify right side
    367,577.20x = 72,331,914,931.44
  5. Step 5: Solve for x
    x = 72,331,914,931.44/367,577.20
  6. Step 6: Final answer
    x = 196,780.20

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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.