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Finding the Fourth Proportional to 18,245.88, 25,179.44 and 11,534.54

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Solution

The fourth proportional to 18,245.88, 25,179.44 and 11,534.54 is: 15,917.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.88 : 25,179.44 = 11,534.54 : x
  2. Step 2: Convert to fraction form
    18,245.88/25,179.44 = 11,534.54/x
  3. Step 3: Cross multiply
    18,245.88x = 25,179.44 × 11,534.54
  4. Step 4: Simplify right side
    18,245.88x = 290,433,074.29
  5. Step 5: Solve for x
    x = 290,433,074.29/18,245.88
  6. Step 6: Final answer
    x = 15,917.73

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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.