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Finding the Fourth Proportional to 17,891.25, 26,828.19 and 5,408.88

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Solution

The fourth proportional to 17,891.25, 26,828.19 and 5,408.88 is: 8,110.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,891.25 : 26,828.19 = 5,408.88 : x
  2. Step 2: Convert to fraction form
    17,891.25/26,828.19 = 5,408.88/x
  3. Step 3: Cross multiply
    17,891.25x = 26,828.19 × 5,408.88
  4. Step 4: Simplify right side
    17,891.25x = 145,110,460.33
  5. Step 5: Solve for x
    x = 145,110,460.33/17,891.25
  6. Step 6: Final answer
    x = 8,110.69

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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.