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Finding the Fourth Proportional to 18,408.98, 25,404.81 and 10,450.46

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Solution

The fourth proportional to 18,408.98, 25,404.81 and 10,450.46 is: 14,421.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.98 : 25,404.81 = 10,450.46 : x
  2. Step 2: Convert to fraction form
    18,408.98/25,404.81 = 10,450.46/x
  3. Step 3: Cross multiply
    18,408.98x = 25,404.81 × 10,450.46
  4. Step 4: Simplify right side
    18,408.98x = 265,491,950.71
  5. Step 5: Solve for x
    x = 265,491,950.71/18,408.98
  6. Step 6: Final answer
    x = 14,421.87

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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.