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Finding the Fourth Proportional to 18,216.81, 27,321.29 and 5,733.90

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Solution

The fourth proportional to 18,216.81, 27,321.29 and 5,733.90 is: 8,599.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.81 : 27,321.29 = 5,733.90 : x
  2. Step 2: Convert to fraction form
    18,216.81/27,321.29 = 5,733.90/x
  3. Step 3: Cross multiply
    18,216.81x = 27,321.29 × 5,733.90
  4. Step 4: Simplify right side
    18,216.81x = 156,657,516.06
  5. Step 5: Solve for x
    x = 156,657,516.06/18,216.81
  6. Step 6: Final answer
    x = 8,599.61

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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.