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Finding the Fourth Proportional to 392,091.44, 588,081.57 and 125,817.50

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Solution

The fourth proportional to 392,091.44, 588,081.57 and 125,817.50 is: 188,708.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,091.44 : 588,081.57 = 125,817.50 : x
  2. Step 2: Convert to fraction form
    392,091.44/588,081.57 = 125,817.50/x
  3. Step 3: Cross multiply
    392,091.44x = 588,081.57 × 125,817.50
  4. Step 4: Simplify right side
    392,091.44x = 73,990,953,931.86
  5. Step 5: Solve for x
    x = 73,990,953,931.86/392,091.44
  6. Step 6: Final answer
    x = 188,708.42

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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.