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Finding the Fourth Proportional to 587,563.88, 811,086.17 and 396,835.61

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Solution

The fourth proportional to 587,563.88, 811,086.17 and 396,835.61 is: 547,800.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,563.88 : 811,086.17 = 396,835.61 : x
  2. Step 2: Convert to fraction form
    587,563.88/811,086.17 = 396,835.61/x
  3. Step 3: Cross multiply
    587,563.88x = 811,086.17 × 396,835.61
  4. Step 4: Simplify right side
    587,563.88x = 321,867,868,994.91
  5. Step 5: Solve for x
    x = 321,867,868,994.91/587,563.88
  6. Step 6: Final answer
    x = 547,800.64

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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.