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Finding the Fourth Proportional to 17,191.88, 25,763.50 and 7,321.22

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Solution

The fourth proportional to 17,191.88, 25,763.50 and 7,321.22 is: 10,971.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,191.88 : 25,763.50 = 7,321.22 : x
  2. Step 2: Convert to fraction form
    17,191.88/25,763.50 = 7,321.22/x
  3. Step 3: Cross multiply
    17,191.88x = 25,763.50 × 7,321.22
  4. Step 4: Simplify right side
    17,191.88x = 188,620,251.47
  5. Step 5: Solve for x
    x = 188,620,251.47/17,191.88
  6. Step 6: Final answer
    x = 10,971.47

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1.5x scale

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.