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Finding the Fourth Proportional to 8,241.80, 12,349.19 and 3,494.17

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Solution

The fourth proportional to 8,241.80, 12,349.19 and 3,494.17 is: 5,235.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,241.80 : 12,349.19 = 3,494.17 : x
  2. Step 2: Convert to fraction form
    8,241.80/12,349.19 = 3,494.17/x
  3. Step 3: Cross multiply
    8,241.80x = 12,349.19 × 3,494.17
  4. Step 4: Simplify right side
    8,241.80x = 43,150,139.52
  5. Step 5: Solve for x
    x = 43,150,139.52/8,241.80
  6. Step 6: Final answer
    x = 5,235.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.