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Finding the Fourth Proportional to 8,471.97, 11,692.41 and 5,116.68

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Solution

The fourth proportional to 8,471.97, 11,692.41 and 5,116.68 is: 7,061.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471.97 : 11,692.41 = 5,116.68 : x
  2. Step 2: Convert to fraction form
    8,471.97/11,692.41 = 5,116.68/x
  3. Step 3: Cross multiply
    8,471.97x = 11,692.41 × 5,116.68
  4. Step 4: Simplify right side
    8,471.97x = 59,826,320.40
  5. Step 5: Solve for x
    x = 59,826,320.40/8,471.97
  6. Step 6: Final answer
    x = 7,061.68

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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.