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Finding the Fourth Proportional to 18,611.60, 27,922.10 and 5,463.97

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Solution

The fourth proportional to 18,611.60, 27,922.10 and 5,463.97 is: 8,197.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.60 : 27,922.10 = 5,463.97 : x
  2. Step 2: Convert to fraction form
    18,611.60/27,922.10 = 5,463.97/x
  3. Step 3: Cross multiply
    18,611.60x = 27,922.10 × 5,463.97
  4. Step 4: Simplify right side
    18,611.60x = 152,565,460.80
  5. Step 5: Solve for x
    x = 152,565,460.80/18,611.60
  6. Step 6: Final answer
    x = 8,197.33

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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.