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Finding the Fourth Proportional to 18,996.36, 28,492.54 and 7,896.04

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Solution

The fourth proportional to 18,996.36, 28,492.54 and 7,896.04 is: 11,843.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.36 : 28,492.54 = 7,896.04 : x
  2. Step 2: Convert to fraction form
    18,996.36/28,492.54 = 7,896.04/x
  3. Step 3: Cross multiply
    18,996.36x = 28,492.54 × 7,896.04
  4. Step 4: Simplify right side
    18,996.36x = 224,978,235.54
  5. Step 5: Solve for x
    x = 224,978,235.54/18,996.36
  6. Step 6: Final answer
    x = 11,843.23

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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.