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Finding the Fourth Proportional to 17,136.72, 23,659.92 and 11,478.78

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Solution

The fourth proportional to 17,136.72, 23,659.92 and 11,478.78 is: 15,848.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,136.72 : 23,659.92 = 11,478.78 : x
  2. Step 2: Convert to fraction form
    17,136.72/23,659.92 = 11,478.78/x
  3. Step 3: Cross multiply
    17,136.72x = 23,659.92 × 11,478.78
  4. Step 4: Simplify right side
    17,136.72x = 271,587,016.50
  5. Step 5: Solve for x
    x = 271,587,016.50/17,136.72
  6. Step 6: Final answer
    x = 15,848.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.