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Finding the Fourth Proportional to 18,481.88, 25,506.06 and 11,408.42

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Solution

The fourth proportional to 18,481.88, 25,506.06 and 11,408.42 is: 15,744.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.88 : 25,506.06 = 11,408.42 : x
  2. Step 2: Convert to fraction form
    18,481.88/25,506.06 = 11,408.42/x
  3. Step 3: Cross multiply
    18,481.88x = 25,506.06 × 11,408.42
  4. Step 4: Simplify right side
    18,481.88x = 290,983,866.01
  5. Step 5: Solve for x
    x = 290,983,866.01/18,481.88
  6. Step 6: Final answer
    x = 15,744.28

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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.