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Finding the Fourth Proportional to 12,683.53, 17,493.80 and 11,249.56

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Solution

The fourth proportional to 12,683.53, 17,493.80 and 11,249.56 is: 15,515.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,683.53 : 17,493.80 = 11,249.56 : x
  2. Step 2: Convert to fraction form
    12,683.53/17,493.80 = 11,249.56/x
  3. Step 3: Cross multiply
    12,683.53x = 17,493.80 × 11,249.56
  4. Step 4: Simplify right side
    12,683.53x = 196,797,452.75
  5. Step 5: Solve for x
    x = 196,797,452.75/12,683.53
  6. Step 6: Final answer
    x = 15,515.99

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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.