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Finding the Fourth Proportional to 8,716.44, 12,992.55 and 8,016.60

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Solution

The fourth proportional to 8,716.44, 12,992.55 and 8,016.60 is: 11,949.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.44 : 12,992.55 = 8,016.60 : x
  2. Step 2: Convert to fraction form
    8,716.44/12,992.55 = 8,016.60/x
  3. Step 3: Cross multiply
    8,716.44x = 12,992.55 × 8,016.60
  4. Step 4: Simplify right side
    8,716.44x = 104,156,076.33
  5. Step 5: Solve for x
    x = 104,156,076.33/8,716.44
  6. Step 6: Final answer
    x = 11,949.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.