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Finding the Fourth Proportional to 18,487.12, 27,733.02 and 7,241.04

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Solution

The fourth proportional to 18,487.12, 27,733.02 and 7,241.04 is: 10,862.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.12 : 27,733.02 = 7,241.04 : x
  2. Step 2: Convert to fraction form
    18,487.12/27,733.02 = 7,241.04/x
  3. Step 3: Cross multiply
    18,487.12x = 27,733.02 × 7,241.04
  4. Step 4: Simplify right side
    18,487.12x = 200,815,907.14
  5. Step 5: Solve for x
    x = 200,815,907.14/18,487.12
  6. Step 6: Final answer
    x = 10,862.48

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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.