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Finding the Fourth Proportional to 18,620.46, 27,923.97 and 7,373.19

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Solution

The fourth proportional to 18,620.46, 27,923.97 and 7,373.19 is: 11,057.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.46 : 27,923.97 = 7,373.19 : x
  2. Step 2: Convert to fraction form
    18,620.46/27,923.97 = 7,373.19/x
  3. Step 3: Cross multiply
    18,620.46x = 27,923.97 × 7,373.19
  4. Step 4: Simplify right side
    18,620.46x = 205,888,736.36
  5. Step 5: Solve for x
    x = 205,888,736.36/18,620.46
  6. Step 6: Final answer
    x = 11,057.12

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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.