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Finding the Fourth Proportional to 392,925.13, 589,134.13 and 187,648.65

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Solution

The fourth proportional to 392,925.13, 589,134.13 and 187,648.65 is: 281,351.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,925.13 : 589,134.13 = 187,648.65 : x
  2. Step 2: Convert to fraction form
    392,925.13/589,134.13 = 187,648.65/x
  3. Step 3: Cross multiply
    392,925.13x = 589,134.13 × 187,648.65
  4. Step 4: Simplify right side
    392,925.13x = 110,550,223,694.30
  5. Step 5: Solve for x
    x = 110,550,223,694.30/392,925.13
  6. Step 6: Final answer
    x = 281,351.88

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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.