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Finding the Fourth Proportional to 8,508.60, 11,742.84 and 8,236.44

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Solution

The fourth proportional to 8,508.60, 11,742.84 and 8,236.44 is: 11,367.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.60 : 11,742.84 = 8,236.44 : x
  2. Step 2: Convert to fraction form
    8,508.60/11,742.84 = 8,236.44/x
  3. Step 3: Cross multiply
    8,508.60x = 11,742.84 × 8,236.44
  4. Step 4: Simplify right side
    8,508.60x = 96,719,197.09
  5. Step 5: Solve for x
    x = 96,719,197.09/8,508.60
  6. Step 6: Final answer
    x = 11,367.23

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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.