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Finding the Fourth Proportional to 68,217.69, 102,137.60 and 34,865.94

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Solution

The fourth proportional to 68,217.69, 102,137.60 and 34,865.94 is: 52,202.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,217.69 : 102,137.60 = 34,865.94 : x
  2. Step 2: Convert to fraction form
    68,217.69/102,137.60 = 34,865.94/x
  3. Step 3: Cross multiply
    68,217.69x = 102,137.60 × 34,865.94
  4. Step 4: Simplify right side
    68,217.69x = 3,561,122,748.33
  5. Step 5: Solve for x
    x = 3,561,122,748.33/68,217.69
  6. Step 6: Final answer
    x = 52,202.34

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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.