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Finding the Fourth Proportional to 422,051.55, 582,486.61 and 240,721.91

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Solution

The fourth proportional to 422,051.55, 582,486.61 and 240,721.91 is: 332,227.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,051.55 : 582,486.61 = 240,721.91 : x
  2. Step 2: Convert to fraction form
    422,051.55/582,486.61 = 240,721.91/x
  3. Step 3: Cross multiply
    422,051.55x = 582,486.61 × 240,721.91
  4. Step 4: Simplify right side
    422,051.55x = 140,217,289,308.63
  5. Step 5: Solve for x
    x = 140,217,289,308.63/422,051.55
  6. Step 6: Final answer
    x = 332,227.87

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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.