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Finding the Fourth Proportional to 10,881.92, 15,016.92 and 6,167.12

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Solution

The fourth proportional to 10,881.92, 15,016.92 and 6,167.12 is: 8,510.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.92 : 15,016.92 = 6,167.12 : x
  2. Step 2: Convert to fraction form
    10,881.92/15,016.92 = 6,167.12/x
  3. Step 3: Cross multiply
    10,881.92x = 15,016.92 × 6,167.12
  4. Step 4: Simplify right side
    10,881.92x = 92,611,147.67
  5. Step 5: Solve for x
    x = 92,611,147.67/10,881.92
  6. Step 6: Final answer
    x = 8,510.55

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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.