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Finding the Fourth Proportional to 18,604.53, 25,661.49 and 11,887.17

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Solution

The fourth proportional to 18,604.53, 25,661.49 and 11,887.17 is: 16,396.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,604.53 : 25,661.49 = 11,887.17 : x
  2. Step 2: Convert to fraction form
    18,604.53/25,661.49 = 11,887.17/x
  3. Step 3: Cross multiply
    18,604.53x = 25,661.49 × 11,887.17
  4. Step 4: Simplify right side
    18,604.53x = 305,042,494.08
  5. Step 5: Solve for x
    x = 305,042,494.08/18,604.53
  6. Step 6: Final answer
    x = 16,396.14

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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.