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Finding the Fourth Proportional to 16,913.22, 25,357.05 and 8,589.30

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Solution

The fourth proportional to 16,913.22, 25,357.05 and 8,589.30 is: 12,877.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,913.22 : 25,357.05 = 8,589.30 : x
  2. Step 2: Convert to fraction form
    16,913.22/25,357.05 = 8,589.30/x
  3. Step 3: Cross multiply
    16,913.22x = 25,357.05 × 8,589.30
  4. Step 4: Simplify right side
    16,913.22x = 217,799,309.57
  5. Step 5: Solve for x
    x = 217,799,309.57/16,913.22
  6. Step 6: Final answer
    x = 12,877.46

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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.