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Finding the Fourth Proportional to 18,451.91, 27,678.17 and 5,801.28

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Solution

The fourth proportional to 18,451.91, 27,678.17 and 5,801.28 is: 8,702.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,451.91 : 27,678.17 = 5,801.28 : x
  2. Step 2: Convert to fraction form
    18,451.91/27,678.17 = 5,801.28/x
  3. Step 3: Cross multiply
    18,451.91x = 27,678.17 × 5,801.28
  4. Step 4: Simplify right side
    18,451.91x = 160,568,724.77
  5. Step 5: Solve for x
    x = 160,568,724.77/18,451.91
  6. Step 6: Final answer
    x = 8,702.01

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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.