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Finding the Fourth Proportional to 18,796.16, 25,936.80 and 11,240.99

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Solution

The fourth proportional to 18,796.16, 25,936.80 and 11,240.99 is: 15,511.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.16 : 25,936.80 = 11,240.99 : x
  2. Step 2: Convert to fraction form
    18,796.16/25,936.80 = 11,240.99/x
  3. Step 3: Cross multiply
    18,796.16x = 25,936.80 × 11,240.99
  4. Step 4: Simplify right side
    18,796.16x = 291,555,309.43
  5. Step 5: Solve for x
    x = 291,555,309.43/18,796.16
  6. Step 6: Final answer
    x = 15,511.43

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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.