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Finding the Fourth Proportional to 18,408.68, 25,404.54 and 10,450.16

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Solution

The fourth proportional to 18,408.68, 25,404.54 and 10,450.16 is: 14,421.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.68 : 25,404.54 = 10,450.16 : x
  2. Step 2: Convert to fraction form
    18,408.68/25,404.54 = 10,450.16/x
  3. Step 3: Cross multiply
    18,408.68x = 25,404.54 × 10,450.16
  4. Step 4: Simplify right side
    18,408.68x = 265,481,507.73
  5. Step 5: Solve for x
    x = 265,481,507.73/18,408.68
  6. Step 6: Final answer
    x = 14,421.54

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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.