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Finding the Fourth Proportional to 18,626.17, 27,933.31 and 6,143.86

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Solution

The fourth proportional to 18,626.17, 27,933.31 and 6,143.86 is: 9,213.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.17 : 27,933.31 = 6,143.86 : x
  2. Step 2: Convert to fraction form
    18,626.17/27,933.31 = 6,143.86/x
  3. Step 3: Cross multiply
    18,626.17x = 27,933.31 × 6,143.86
  4. Step 4: Simplify right side
    18,626.17x = 171,618,345.98
  5. Step 5: Solve for x
    x = 171,618,345.98/18,626.17
  6. Step 6: Final answer
    x = 9,213.83

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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.