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Finding the Fourth Proportional to 19,879.56, 27,447.39 and 18,194.49

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Solution

The fourth proportional to 19,879.56, 27,447.39 and 18,194.49 is: 25,120.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.56 : 27,447.39 = 18,194.49 : x
  2. Step 2: Convert to fraction form
    19,879.56/27,447.39 = 18,194.49/x
  3. Step 3: Cross multiply
    19,879.56x = 27,447.39 × 18,194.49
  4. Step 4: Simplify right side
    19,879.56x = 499,391,262.88
  5. Step 5: Solve for x
    x = 499,391,262.88/19,879.56
  6. Step 6: Final answer
    x = 25,120.84

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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.