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Finding the Fourth Proportional to 17,190.54, 25,787.13 and 7,329.87

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Solution

The fourth proportional to 17,190.54, 25,787.13 and 7,329.87 is: 10,995.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,190.54 : 25,787.13 = 7,329.87 : x
  2. Step 2: Convert to fraction form
    17,190.54/25,787.13 = 7,329.87/x
  3. Step 3: Cross multiply
    17,190.54x = 25,787.13 × 7,329.87
  4. Step 4: Simplify right side
    17,190.54x = 189,016,310.57
  5. Step 5: Solve for x
    x = 189,016,310.57/17,190.54
  6. Step 6: Final answer
    x = 10,995.37

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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.