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Finding the Fourth Proportional to 18,661.95, 25,753.28 and 10,163.97

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Solution

The fourth proportional to 18,661.95, 25,753.28 and 10,163.97 is: 14,026.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.95 : 25,753.28 = 10,163.97 : x
  2. Step 2: Convert to fraction form
    18,661.95/25,753.28 = 10,163.97/x
  3. Step 3: Cross multiply
    18,661.95x = 25,753.28 × 10,163.97
  4. Step 4: Simplify right side
    18,661.95x = 261,755,514.50
  5. Step 5: Solve for x
    x = 261,755,514.50/18,661.95
  6. Step 6: Final answer
    x = 14,026.16

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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.