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Finding the Fourth Proportional to 69,679.01, 104,486.15 and 34,142.09

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Solution

The fourth proportional to 69,679.01, 104,486.15 and 34,142.09 is: 51,197.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,679.01 : 104,486.15 = 34,142.09 : x
  2. Step 2: Convert to fraction form
    69,679.01/104,486.15 = 34,142.09/x
  3. Step 3: Cross multiply
    69,679.01x = 104,486.15 × 34,142.09
  4. Step 4: Simplify right side
    69,679.01x = 3,567,375,099.98
  5. Step 5: Solve for x
    x = 3,567,375,099.98/69,679.01
  6. Step 6: Final answer
    x = 51,197.27

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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.