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Finding the Fourth Proportional to 18,093.72, 27,149.86 and 8,616.76

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Solution

The fourth proportional to 18,093.72, 27,149.86 and 8,616.76 is: 12,929.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,093.72 : 27,149.86 = 8,616.76 : x
  2. Step 2: Convert to fraction form
    18,093.72/27,149.86 = 8,616.76/x
  3. Step 3: Cross multiply
    18,093.72x = 27,149.86 × 8,616.76
  4. Step 4: Simplify right side
    18,093.72x = 233,943,827.65
  5. Step 5: Solve for x
    x = 233,943,827.65/18,093.72
  6. Step 6: Final answer
    x = 12,929.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.