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Finding the Fourth Proportional to 26,398.77, 39,593.94 and 8,629.30

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Solution

The fourth proportional to 26,398.77, 39,593.94 and 8,629.30 is: 12,942.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,398.77 : 39,593.94 = 8,629.30 : x
  2. Step 2: Convert to fraction form
    26,398.77/39,593.94 = 8,629.30/x
  3. Step 3: Cross multiply
    26,398.77x = 39,593.94 × 8,629.30
  4. Step 4: Simplify right side
    26,398.77x = 341,667,986.44
  5. Step 5: Solve for x
    x = 341,667,986.44/26,398.77
  6. Step 6: Final answer
    x = 12,942.57

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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.