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Finding the Fourth Proportional to 16,419.75, 22,659.39 and 8,967.75

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Solution

The fourth proportional to 16,419.75, 22,659.39 and 8,967.75 is: 12,375.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,419.75 : 22,659.39 = 8,967.75 : x
  2. Step 2: Convert to fraction form
    16,419.75/22,659.39 = 8,967.75/x
  3. Step 3: Cross multiply
    16,419.75x = 22,659.39 × 8,967.75
  4. Step 4: Simplify right side
    16,419.75x = 203,203,744.67
  5. Step 5: Solve for x
    x = 203,203,744.67/16,419.75
  6. Step 6: Final answer
    x = 12,375.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.