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Finding the Fourth Proportional to 18,654.72, 27,944.61 and 9,266.36

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Solution

The fourth proportional to 18,654.72, 27,944.61 and 9,266.36 is: 13,880.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.72 : 27,944.61 = 9,266.36 : x
  2. Step 2: Convert to fraction form
    18,654.72/27,944.61 = 9,266.36/x
  3. Step 3: Cross multiply
    18,654.72x = 27,944.61 × 9,266.36
  4. Step 4: Simplify right side
    18,654.72x = 258,944,676.60
  5. Step 5: Solve for x
    x = 258,944,676.60/18,654.72
  6. Step 6: Final answer
    x = 13,880.92

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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.