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Finding the Fourth Proportional to 18,467.40, 27,701.10 and 16,620.60

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Solution

The fourth proportional to 18,467.40, 27,701.10 and 16,620.60 is: 24,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,467.40 : 27,701.10 = 16,620.60 : x
  2. Step 2: Convert to fraction form
    18,467.40/27,701.10 = 16,620.60/x
  3. Step 3: Cross multiply
    18,467.40x = 27,701.10 × 16,620.60
  4. Step 4: Simplify right side
    18,467.40x = 460,408,902.66
  5. Step 5: Solve for x
    x = 460,408,902.66/18,467.40
  6. Step 6: Final answer
    x = 24,930.90

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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.