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Finding the Fourth Proportional to 17,322.70, 25,960.14 and 7,939.38

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Solution

The fourth proportional to 17,322.70, 25,960.14 and 7,939.38 is: 11,898.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,322.70 : 25,960.14 = 7,939.38 : x
  2. Step 2: Convert to fraction form
    17,322.70/25,960.14 = 7,939.38/x
  3. Step 3: Cross multiply
    17,322.70x = 25,960.14 × 7,939.38
  4. Step 4: Simplify right side
    17,322.70x = 206,107,416.31
  5. Step 5: Solve for x
    x = 206,107,416.31/17,322.70
  6. Step 6: Final answer
    x = 11,898.11

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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.