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Finding the Fourth Proportional to 17,310.80, 25,956.60 and 6,910.80

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Solution

The fourth proportional to 17,310.80, 25,956.60 and 6,910.80 is: 10,362.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,310.80 : 25,956.60 = 6,910.80 : x
  2. Step 2: Convert to fraction form
    17,310.80/25,956.60 = 6,910.80/x
  3. Step 3: Cross multiply
    17,310.80x = 25,956.60 × 6,910.80
  4. Step 4: Simplify right side
    17,310.80x = 179,380,871.28
  5. Step 5: Solve for x
    x = 179,380,871.28/17,310.80
  6. Step 6: Final answer
    x = 10,362.37

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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.