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Finding the Fourth Proportional to 16,917.21, 25,381.73 and 5,230.42

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Solution

The fourth proportional to 16,917.21, 25,381.73 and 5,230.42 is: 7,847.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,917.21 : 25,381.73 = 5,230.42 : x
  2. Step 2: Convert to fraction form
    16,917.21/25,381.73 = 5,230.42/x
  3. Step 3: Cross multiply
    16,917.21x = 25,381.73 × 5,230.42
  4. Step 4: Simplify right side
    16,917.21x = 132,757,057.85
  5. Step 5: Solve for x
    x = 132,757,057.85/16,917.21
  6. Step 6: Final answer
    x = 7,847.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.