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Finding the Fourth Proportional to 17,112.78, 25,661.97 and 7,251.66

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Solution

The fourth proportional to 17,112.78, 25,661.97 and 7,251.66 is: 10,874.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,112.78 : 25,661.97 = 7,251.66 : x
  2. Step 2: Convert to fraction form
    17,112.78/25,661.97 = 7,251.66/x
  3. Step 3: Cross multiply
    17,112.78x = 25,661.97 × 7,251.66
  4. Step 4: Simplify right side
    17,112.78x = 186,091,881.37
  5. Step 5: Solve for x
    x = 186,091,881.37/17,112.78
  6. Step 6: Final answer
    x = 10,874.44

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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.