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Finding the Fourth Proportional to 33,687.70, 50,516.89 and 17,889.28

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Solution

The fourth proportional to 33,687.70, 50,516.89 and 17,889.28 is: 26,826.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,687.70 : 50,516.89 = 17,889.28 : x
  2. Step 2: Convert to fraction form
    33,687.70/50,516.89 = 17,889.28/x
  3. Step 3: Cross multiply
    33,687.70x = 50,516.89 × 17,889.28
  4. Step 4: Simplify right side
    33,687.70x = 903,710,789.94
  5. Step 5: Solve for x
    x = 903,710,789.94/33,687.70
  6. Step 6: Final answer
    x = 26,826.14

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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.