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Finding the Fourth Proportional to 18,620.73, 27,936.77 and 5,473.22

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Solution

The fourth proportional to 18,620.73, 27,936.77 and 5,473.22 is: 8,211.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.73 : 27,936.77 = 5,473.22 : x
  2. Step 2: Convert to fraction form
    18,620.73/27,936.77 = 5,473.22/x
  3. Step 3: Cross multiply
    18,620.73x = 27,936.77 × 5,473.22
  4. Step 4: Simplify right side
    18,620.73x = 152,903,921.25
  5. Step 5: Solve for x
    x = 152,903,921.25/18,620.73
  6. Step 6: Final answer
    x = 8,211.49

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1.5x scale

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.