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Finding the Fourth Proportional to 8,692.92, 11,991.78 and 5,545.80

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Solution

The fourth proportional to 8,692.92, 11,991.78 and 5,545.80 is: 7,650.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.92 : 11,991.78 = 5,545.80 : x
  2. Step 2: Convert to fraction form
    8,692.92/11,991.78 = 5,545.80/x
  3. Step 3: Cross multiply
    8,692.92x = 11,991.78 × 5,545.80
  4. Step 4: Simplify right side
    8,692.92x = 66,504,013.52
  5. Step 5: Solve for x
    x = 66,504,013.52/8,692.92
  6. Step 6: Final answer
    x = 7,650.37

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1.5x scale

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.