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Finding the Fourth Proportional to 682,163.88, 941,308.20 and 391,759.44

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Solution

The fourth proportional to 682,163.88, 941,308.20 and 391,759.44 is: 540,583.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,163.88 : 941,308.20 = 391,759.44 : x
  2. Step 2: Convert to fraction form
    682,163.88/941,308.20 = 391,759.44/x
  3. Step 3: Cross multiply
    682,163.88x = 941,308.20 × 391,759.44
  4. Step 4: Simplify right side
    682,163.88x = 368,766,373,299.41
  5. Step 5: Solve for x
    x = 368,766,373,299.41/682,163.88
  6. Step 6: Final answer
    x = 540,583.26

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1.5x scale

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.