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Finding the Fourth Proportional to 18,015, 27,052.38 and 11,133.24

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Solution

The fourth proportional to 18,015, 27,052.38 and 11,133.24 is: 16,718.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,015 : 27,052.38 = 11,133.24 : x
  2. Step 2: Convert to fraction form
    18,015/27,052.38 = 11,133.24/x
  3. Step 3: Cross multiply
    18,015x = 27,052.38 × 11,133.24
  4. Step 4: Simplify right side
    18,015x = 301,180,639.11
  5. Step 5: Solve for x
    x = 301,180,639.11/18,015
  6. Step 6: Final answer
    x = 16,718.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.