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Finding the Fourth Proportional to 18,641.80, 27,967.58 and 6,163.72

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Solution

The fourth proportional to 18,641.80, 27,967.58 and 6,163.72 is: 9,247.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.80 : 27,967.58 = 6,163.72 : x
  2. Step 2: Convert to fraction form
    18,641.80/27,967.58 = 6,163.72/x
  3. Step 3: Cross multiply
    18,641.80x = 27,967.58 × 6,163.72
  4. Step 4: Simplify right side
    18,641.80x = 172,384,332.20
  5. Step 5: Solve for x
    x = 172,384,332.20/18,641.80
  6. Step 6: Final answer
    x = 9,247.19

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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.