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Finding the Fourth Proportional to 18,808.97, 25,958.06 and 12,110.60

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Solution

The fourth proportional to 18,808.97, 25,958.06 and 12,110.60 is: 16,713.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.97 : 25,958.06 = 12,110.60 : x
  2. Step 2: Convert to fraction form
    18,808.97/25,958.06 = 12,110.60/x
  3. Step 3: Cross multiply
    18,808.97x = 25,958.06 × 12,110.60
  4. Step 4: Simplify right side
    18,808.97x = 314,367,555.99
  5. Step 5: Solve for x
    x = 314,367,555.99/18,808.97
  6. Step 6: Final answer
    x = 16,713.71

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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.