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Finding the Fourth Proportional to 367,611.20, 551,416.80 and 274,299.20

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Solution

The fourth proportional to 367,611.20, 551,416.80 and 274,299.20 is: 411,448.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,611.20 : 551,416.80 = 274,299.20 : x
  2. Step 2: Convert to fraction form
    367,611.20/551,416.80 = 274,299.20/x
  3. Step 3: Cross multiply
    367,611.20x = 551,416.80 × 274,299.20
  4. Step 4: Simplify right side
    367,611.20x = 151,253,187,106.56
  5. Step 5: Solve for x
    x = 151,253,187,106.56/367,611.20
  6. Step 6: Final answer
    x = 411,448.80

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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.