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Finding the Fourth Proportional to 17,212.55, 25,821.52 and 7,351.88

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Solution

The fourth proportional to 17,212.55, 25,821.52 and 7,351.88 is: 11,028.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,212.55 : 25,821.52 = 7,351.88 : x
  2. Step 2: Convert to fraction form
    17,212.55/25,821.52 = 7,351.88/x
  3. Step 3: Cross multiply
    17,212.55x = 25,821.52 × 7,351.88
  4. Step 4: Simplify right side
    17,212.55x = 189,836,568.97
  5. Step 5: Solve for x
    x = 189,836,568.97/17,212.55
  6. Step 6: Final answer
    x = 11,028.97

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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.