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Finding the Fourth Proportional to 69,881.49, 104,865.21 and 27,754.20

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Solution

The fourth proportional to 69,881.49, 104,865.21 and 27,754.20 is: 41,648.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,881.49 : 104,865.21 = 27,754.20 : x
  2. Step 2: Convert to fraction form
    69,881.49/104,865.21 = 27,754.20/x
  3. Step 3: Cross multiply
    69,881.49x = 104,865.21 × 27,754.20
  4. Step 4: Simplify right side
    69,881.49x = 2,910,450,011.38
  5. Step 5: Solve for x
    x = 2,910,450,011.38/69,881.49
  6. Step 6: Final answer
    x = 41,648.37

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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.