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Finding the Fourth Proportional to 18,793.01, 25,921.86 and 12,087.12

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Solution

The fourth proportional to 18,793.01, 25,921.86 and 12,087.12 is: 16,672.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.01 : 25,921.86 = 12,087.12 : x
  2. Step 2: Convert to fraction form
    18,793.01/25,921.86 = 12,087.12/x
  3. Step 3: Cross multiply
    18,793.01x = 25,921.86 × 12,087.12
  4. Step 4: Simplify right side
    18,793.01x = 313,320,684.32
  5. Step 5: Solve for x
    x = 313,320,684.32/18,793.01
  6. Step 6: Final answer
    x = 16,672.19

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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.