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Finding the Fourth Proportional to 18,556.96, 27,811.20 and 16,211.32

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Solution

The fourth proportional to 18,556.96, 27,811.20 and 16,211.32 is: 24,295.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,556.96 : 27,811.20 = 16,211.32 : x
  2. Step 2: Convert to fraction form
    18,556.96/27,811.20 = 16,211.32/x
  3. Step 3: Cross multiply
    18,556.96x = 27,811.20 × 16,211.32
  4. Step 4: Simplify right side
    18,556.96x = 450,856,262.78
  5. Step 5: Solve for x
    x = 450,856,262.78/18,556.96
  6. Step 6: Final answer
    x = 24,295.80

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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.