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Finding the Fourth Proportional to 17,169.15, 25,748.26 and 5,479.64

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Solution

The fourth proportional to 17,169.15, 25,748.26 and 5,479.64 is: 8,217.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,169.15 : 25,748.26 = 5,479.64 : x
  2. Step 2: Convert to fraction form
    17,169.15/25,748.26 = 5,479.64/x
  3. Step 3: Cross multiply
    17,169.15x = 25,748.26 × 5,479.64
  4. Step 4: Simplify right side
    17,169.15x = 141,091,039.29
  5. Step 5: Solve for x
    x = 141,091,039.29/17,169.15
  6. Step 6: Final answer
    x = 8,217.71

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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.