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Finding the Fourth Proportional to 67,940.38, 101,896.74 and 25,805.70

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Solution

The fourth proportional to 67,940.38, 101,896.74 and 25,805.70 is: 38,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,940.38 : 101,896.74 = 25,805.70 : x
  2. Step 2: Convert to fraction form
    67,940.38/101,896.74 = 25,805.70/x
  3. Step 3: Cross multiply
    67,940.38x = 101,896.74 × 25,805.70
  4. Step 4: Simplify right side
    67,940.38x = 2,629,516,703.42
  5. Step 5: Solve for x
    x = 2,629,516,703.42/67,940.38
  6. Step 6: Final answer
    x = 38,703.30

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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.