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Finding the Fourth Proportional to 367,603.20, 551,404.80 and 131,212.80

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Solution

The fourth proportional to 367,603.20, 551,404.80 and 131,212.80 is: 196,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,603.20 : 551,404.80 = 131,212.80 : x
  2. Step 2: Convert to fraction form
    367,603.20/551,404.80 = 131,212.80/x
  3. Step 3: Cross multiply
    367,603.20x = 551,404.80 × 131,212.80
  4. Step 4: Simplify right side
    367,603.20x = 72,351,367,741.44
  5. Step 5: Solve for x
    x = 72,351,367,741.44/367,603.20
  6. Step 6: Final answer
    x = 196,819.20

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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.