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Finding the Fourth Proportional to 18,079.93, 27,115.52 and 6,979.54

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Solution

The fourth proportional to 18,079.93, 27,115.52 and 6,979.54 is: 10,467.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,079.93 : 27,115.52 = 6,979.54 : x
  2. Step 2: Convert to fraction form
    18,079.93/27,115.52 = 6,979.54/x
  3. Step 3: Cross multiply
    18,079.93x = 27,115.52 × 6,979.54
  4. Step 4: Simplify right side
    18,079.93x = 189,253,685.99
  5. Step 5: Solve for x
    x = 189,253,685.99/18,079.93
  6. Step 6: Final answer
    x = 10,467.61

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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.