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Finding the Fourth Proportional to 18,805.14, 25,960.77 and 12,847.86

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Solution

The fourth proportional to 18,805.14, 25,960.77 and 12,847.86 is: 17,736.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.14 : 25,960.77 = 12,847.86 : x
  2. Step 2: Convert to fraction form
    18,805.14/25,960.77 = 12,847.86/x
  3. Step 3: Cross multiply
    18,805.14x = 25,960.77 × 12,847.86
  4. Step 4: Simplify right side
    18,805.14x = 333,540,338.45
  5. Step 5: Solve for x
    x = 333,540,338.45/18,805.14
  6. Step 6: Final answer
    x = 17,736.66

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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.