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Finding the Fourth Proportional to 15,049.08, 20,766.60 and 8,671.14

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Solution

The fourth proportional to 15,049.08, 20,766.60 and 8,671.14 is: 11,965.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,049.08 : 20,766.60 = 8,671.14 : x
  2. Step 2: Convert to fraction form
    15,049.08/20,766.60 = 8,671.14/x
  3. Step 3: Cross multiply
    15,049.08x = 20,766.60 × 8,671.14
  4. Step 4: Simplify right side
    15,049.08x = 180,070,095.92
  5. Step 5: Solve for x
    x = 180,070,095.92/15,049.08
  6. Step 6: Final answer
    x = 11,965.52

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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.