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Finding the Fourth Proportional to 18,665.92, 27,999.16 and 4,626

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Solution

The fourth proportional to 18,665.92, 27,999.16 and 4,626 is: 6,939.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.92 : 27,999.16 = 4,626 : x
  2. Step 2: Convert to fraction form
    18,665.92/27,999.16 = 4,626/x
  3. Step 3: Cross multiply
    18,665.92x = 27,999.16 × 4,626
  4. Step 4: Simplify right side
    18,665.92x = 129,524,114.16
  5. Step 5: Solve for x
    x = 129,524,114.16/18,665.92
  6. Step 6: Final answer
    x = 6,939.07

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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.