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Finding the Fourth Proportional to 18,793.62, 25,923.47 and 12,087.99

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Solution

The fourth proportional to 18,793.62, 25,923.47 and 12,087.99 is: 16,673.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.62 : 25,923.47 = 12,087.99 : x
  2. Step 2: Convert to fraction form
    18,793.62/25,923.47 = 12,087.99/x
  3. Step 3: Cross multiply
    18,793.62x = 25,923.47 × 12,087.99
  4. Step 4: Simplify right side
    18,793.62x = 313,362,585.69
  5. Step 5: Solve for x
    x = 313,362,585.69/18,793.62
  6. Step 6: Final answer
    x = 16,673.88

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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.