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Finding the Fourth Proportional to 20,193.54, 27,863.82 and 11,240.82

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Solution

The fourth proportional to 20,193.54, 27,863.82 and 11,240.82 is: 15,510.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,193.54 : 27,863.82 = 11,240.82 : x
  2. Step 2: Convert to fraction form
    20,193.54/27,863.82 = 11,240.82/x
  3. Step 3: Cross multiply
    20,193.54x = 27,863.82 × 11,240.82
  4. Step 4: Simplify right side
    20,193.54x = 313,212,185.13
  5. Step 5: Solve for x
    x = 313,212,185.13/20,193.54
  6. Step 6: Final answer
    x = 15,510.51

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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.