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Finding the Fourth Proportional to 61,694.87, 85,138.24 and 34,836.68

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Solution

The fourth proportional to 61,694.87, 85,138.24 and 34,836.68 is: 48,074.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,694.87 : 85,138.24 = 34,836.68 : x
  2. Step 2: Convert to fraction form
    61,694.87/85,138.24 = 34,836.68/x
  3. Step 3: Cross multiply
    61,694.87x = 85,138.24 × 34,836.68
  4. Step 4: Simplify right side
    61,694.87x = 2,965,933,813.72
  5. Step 5: Solve for x
    x = 2,965,933,813.72/61,694.87
  6. Step 6: Final answer
    x = 48,074.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.