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Finding the Fourth Proportional to 18,661.92, 25,754.16 and 11,592.24

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Solution

The fourth proportional to 18,661.92, 25,754.16 and 11,592.24 is: 15,997.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.92 : 25,754.16 = 11,592.24 : x
  2. Step 2: Convert to fraction form
    18,661.92/25,754.16 = 11,592.24/x
  3. Step 3: Cross multiply
    18,661.92x = 25,754.16 × 11,592.24
  4. Step 4: Simplify right side
    18,661.92x = 298,548,403.72
  5. Step 5: Solve for x
    x = 298,548,403.72/18,661.92
  6. Step 6: Final answer
    x = 15,997.73

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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.