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Finding the Fourth Proportional to 17,626.31, 26,406.35 and 8,731.29

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Solution

The fourth proportional to 17,626.31, 26,406.35 and 8,731.29 is: 13,080.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,626.31 : 26,406.35 = 8,731.29 : x
  2. Step 2: Convert to fraction form
    17,626.31/26,406.35 = 8,731.29/x
  3. Step 3: Cross multiply
    17,626.31x = 26,406.35 × 8,731.29
  4. Step 4: Simplify right side
    17,626.31x = 230,561,636.91
  5. Step 5: Solve for x
    x = 230,561,636.91/17,626.31
  6. Step 6: Final answer
    x = 13,080.54

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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.