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Finding the Fourth Proportional to 422,371.13, 582,872.15 and 252,605.25

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Solution

The fourth proportional to 422,371.13, 582,872.15 and 252,605.25 is: 348,595.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,371.13 : 582,872.15 = 252,605.25 : x
  2. Step 2: Convert to fraction form
    422,371.13/582,872.15 = 252,605.25/x
  3. Step 3: Cross multiply
    422,371.13x = 582,872.15 × 252,605.25
  4. Step 4: Simplify right side
    422,371.13x = 147,236,565,800.30
  5. Step 5: Solve for x
    x = 147,236,565,800.30/422,371.13
  6. Step 6: Final answer
    x = 348,595.25

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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.