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Finding the Fourth Proportional to 17,129.90, 25,676.89 and 5,881.88

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Solution

The fourth proportional to 17,129.90, 25,676.89 and 5,881.88 is: 8,816.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,129.90 : 25,676.89 = 5,881.88 : x
  2. Step 2: Convert to fraction form
    17,129.90/25,676.89 = 5,881.88/x
  3. Step 3: Cross multiply
    17,129.90x = 25,676.89 × 5,881.88
  4. Step 4: Simplify right side
    17,129.90x = 151,028,385.75
  5. Step 5: Solve for x
    x = 151,028,385.75/17,129.90
  6. Step 6: Final answer
    x = 8,816.66

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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.