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Finding the Fourth Proportional to 275,540.80, 413,311.20 and 118,076.80

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Solution

The fourth proportional to 275,540.80, 413,311.20 and 118,076.80 is: 177,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,540.80 : 413,311.20 = 118,076.80 : x
  2. Step 2: Convert to fraction form
    275,540.80/413,311.20 = 118,076.80/x
  3. Step 3: Cross multiply
    275,540.80x = 413,311.20 × 118,076.80
  4. Step 4: Simplify right side
    275,540.80x = 48,802,463,900.16
  5. Step 5: Solve for x
    x = 48,802,463,900.16/275,540.80
  6. Step 6: Final answer
    x = 177,115.20

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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.