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Finding the Fourth Proportional to 61,309.43, 91,965.88 and 16,936.19

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Solution

The fourth proportional to 61,309.43, 91,965.88 and 16,936.19 is: 25,404.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,309.43 : 91,965.88 = 16,936.19 : x
  2. Step 2: Convert to fraction form
    61,309.43/91,965.88 = 16,936.19/x
  3. Step 3: Cross multiply
    61,309.43x = 91,965.88 × 16,936.19
  4. Step 4: Simplify right side
    61,309.43x = 1,557,551,617.20
  5. Step 5: Solve for x
    x = 1,557,551,617.20/61,309.43
  6. Step 6: Final answer
    x = 25,404.76

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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.