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Finding the Fourth Proportional to 17,687.70, 26,500.77 and 14,761.98

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Solution

The fourth proportional to 17,687.70, 26,500.77 and 14,761.98 is: 22,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,687.70 : 26,500.77 = 14,761.98 : x
  2. Step 2: Convert to fraction form
    17,687.70/26,500.77 = 14,761.98/x
  3. Step 3: Cross multiply
    17,687.70x = 26,500.77 × 14,761.98
  4. Step 4: Simplify right side
    17,687.70x = 391,203,836.72
  5. Step 5: Solve for x
    x = 391,203,836.72/17,687.70
  6. Step 6: Final answer
    x = 22,117.28

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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.