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Finding the Fourth Proportional to 18,797.25, 25,928.47 and 12,091.62

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Solution

The fourth proportional to 18,797.25, 25,928.47 and 12,091.62 is: 16,678.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,797.25 : 25,928.47 = 12,091.62 : x
  2. Step 2: Convert to fraction form
    18,797.25/25,928.47 = 12,091.62/x
  3. Step 3: Cross multiply
    18,797.25x = 25,928.47 × 12,091.62
  4. Step 4: Simplify right side
    18,797.25x = 313,517,046.55
  5. Step 5: Solve for x
    x = 313,517,046.55/18,797.25
  6. Step 6: Final answer
    x = 16,678.88

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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.