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Finding the Fourth Proportional to 61,067.84, 91,614.82 and 18,947.01

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Solution

The fourth proportional to 61,067.84, 91,614.82 and 18,947.01 is: 28,424.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,067.84 : 91,614.82 = 18,947.01 : x
  2. Step 2: Convert to fraction form
    61,067.84/91,614.82 = 18,947.01/x
  3. Step 3: Cross multiply
    61,067.84x = 91,614.82 × 18,947.01
  4. Step 4: Simplify right side
    61,067.84x = 1,735,826,910.69
  5. Step 5: Solve for x
    x = 1,735,826,910.69/61,067.84
  6. Step 6: Final answer
    x = 28,424.57

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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.