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Finding the Fourth Proportional to 13,794.68, 20,673.38 and 9,890.48

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Solution

The fourth proportional to 13,794.68, 20,673.38 and 9,890.48 is: 14,822.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,794.68 : 20,673.38 = 9,890.48 : x
  2. Step 2: Convert to fraction form
    13,794.68/20,673.38 = 9,890.48/x
  3. Step 3: Cross multiply
    13,794.68x = 20,673.38 × 9,890.48
  4. Step 4: Simplify right side
    13,794.68x = 204,469,651.42
  5. Step 5: Solve for x
    x = 204,469,651.42/13,794.68
  6. Step 6: Final answer
    x = 14,822.36

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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.