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Finding the Fourth Proportional to 6,679.60, 9,217.80 and 3,695.44

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Solution

The fourth proportional to 6,679.60, 9,217.80 and 3,695.44 is: 5,099.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,679.60 : 9,217.80 = 3,695.44 : x
  2. Step 2: Convert to fraction form
    6,679.60/9,217.80 = 3,695.44/x
  3. Step 3: Cross multiply
    6,679.60x = 9,217.80 × 3,695.44
  4. Step 4: Simplify right side
    6,679.60x = 34,063,826.83
  5. Step 5: Solve for x
    x = 34,063,826.83/6,679.60
  6. Step 6: Final answer
    x = 5,099.68

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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.