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Finding the Fourth Proportional to 16,511.92, 22,786.66 and 8,958.30

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Solution

The fourth proportional to 16,511.92, 22,786.66 and 8,958.30 is: 12,362.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,511.92 : 22,786.66 = 8,958.30 : x
  2. Step 2: Convert to fraction form
    16,511.92/22,786.66 = 8,958.30/x
  3. Step 3: Cross multiply
    16,511.92x = 22,786.66 × 8,958.30
  4. Step 4: Simplify right side
    16,511.92x = 204,129,736.28
  5. Step 5: Solve for x
    x = 204,129,736.28/16,511.92
  6. Step 6: Final answer
    x = 12,362.57

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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.