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Finding the Fourth Proportional to 392,586.60, 588,879.90 and 112,067.40

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Solution

The fourth proportional to 392,586.60, 588,879.90 and 112,067.40 is: 168,101.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,586.60 : 588,879.90 = 112,067.40 : x
  2. Step 2: Convert to fraction form
    392,586.60/588,879.90 = 112,067.40/x
  3. Step 3: Cross multiply
    392,586.60x = 588,879.90 × 112,067.40
  4. Step 4: Simplify right side
    392,586.60x = 65,994,239,305.26
  5. Step 5: Solve for x
    x = 65,994,239,305.26/392,586.60
  6. Step 6: Final answer
    x = 168,101.10

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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.