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Finding the Fourth Proportional to 392,557.20, 588,912.60 and 167,917.20

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Solution

The fourth proportional to 392,557.20, 588,912.60 and 167,917.20 is: 251,908.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,557.20 : 588,912.60 = 167,917.20 : x
  2. Step 2: Convert to fraction form
    392,557.20/588,912.60 = 167,917.20/x
  3. Step 3: Cross multiply
    392,557.20x = 588,912.60 × 167,917.20
  4. Step 4: Simplify right side
    392,557.20x = 98,888,554,836.72
  5. Step 5: Solve for x
    x = 98,888,554,836.72/392,557.20
  6. Step 6: Final answer
    x = 251,908.65

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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.