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Finding the Fourth Proportional to 17,256.65, 25,871.20 and 15,872.76

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Solution

The fourth proportional to 17,256.65, 25,871.20 and 15,872.76 is: 23,796.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,256.65 : 25,871.20 = 15,872.76 : x
  2. Step 2: Convert to fraction form
    17,256.65/25,871.20 = 15,872.76/x
  3. Step 3: Cross multiply
    17,256.65x = 25,871.20 × 15,872.76
  4. Step 4: Simplify right side
    17,256.65x = 410,647,308.83
  5. Step 5: Solve for x
    x = 410,647,308.83/17,256.65
  6. Step 6: Final answer
    x = 23,796.47

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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.