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Finding the Fourth Proportional to 69,388.48, 104,179.92 and 43,013.44

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Solution

The fourth proportional to 69,388.48, 104,179.92 and 43,013.44 is: 64,580.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,388.48 : 104,179.92 = 43,013.44 : x
  2. Step 2: Convert to fraction form
    69,388.48/104,179.92 = 43,013.44/x
  3. Step 3: Cross multiply
    69,388.48x = 104,179.92 × 43,013.44
  4. Step 4: Simplify right side
    69,388.48x = 4,481,136,738.12
  5. Step 5: Solve for x
    x = 4,481,136,738.12/69,388.48
  6. Step 6: Final answer
    x = 64,580.41

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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.