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Finding the Fourth Proportional to 422,162.91, 582,573.45 and 240,871.55

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Solution

The fourth proportional to 422,162.91, 582,573.45 and 240,871.55 is: 332,396.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,162.91 : 582,573.45 = 240,871.55 : x
  2. Step 2: Convert to fraction form
    422,162.91/582,573.45 = 240,871.55/x
  3. Step 3: Cross multiply
    422,162.91x = 582,573.45 × 240,871.55
  4. Step 4: Simplify right side
    422,162.91x = 140,325,366,977.48
  5. Step 5: Solve for x
    x = 140,325,366,977.48/422,162.91
  6. Step 6: Final answer
    x = 332,396.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.