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Finding the Fourth Proportional to 204,076.80, 306,115.20 and 181,915.20

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Solution

The fourth proportional to 204,076.80, 306,115.20 and 181,915.20 is: 272,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,076.80 : 306,115.20 = 181,915.20 : x
  2. Step 2: Convert to fraction form
    204,076.80/306,115.20 = 181,915.20/x
  3. Step 3: Cross multiply
    204,076.80x = 306,115.20 × 181,915.20
  4. Step 4: Simplify right side
    204,076.80x = 55,687,007,831.04
  5. Step 5: Solve for x
    x = 55,687,007,831.04/204,076.80
  6. Step 6: Final answer
    x = 272,872.80

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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.