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Finding the Fourth Proportional to 17,291.88, 25,915.26 and 7,928.52

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Solution

The fourth proportional to 17,291.88, 25,915.26 and 7,928.52 is: 11,882.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,291.88 : 25,915.26 = 7,928.52 : x
  2. Step 2: Convert to fraction form
    17,291.88/25,915.26 = 7,928.52/x
  3. Step 3: Cross multiply
    17,291.88x = 25,915.26 × 7,928.52
  4. Step 4: Simplify right side
    17,291.88x = 205,469,657.22
  5. Step 5: Solve for x
    x = 205,469,657.22/17,291.88
  6. Step 6: Final answer
    x = 11,882.44

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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.