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Finding the Fourth Proportional to 18,318.23, 27,479.34 and 5,835.32

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Solution

The fourth proportional to 18,318.23, 27,479.34 and 5,835.32 is: 8,753.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.23 : 27,479.34 = 5,835.32 : x
  2. Step 2: Convert to fraction form
    18,318.23/27,479.34 = 5,835.32/x
  3. Step 3: Cross multiply
    18,318.23x = 27,479.34 × 5,835.32
  4. Step 4: Simplify right side
    18,318.23x = 160,350,575.72
  5. Step 5: Solve for x
    x = 160,350,575.72/18,318.23
  6. Step 6: Final answer
    x = 8,753.61

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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.