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Finding the Fourth Proportional to 17,911.50, 24,710.19 and 11,185.44

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Solution

The fourth proportional to 17,911.50, 24,710.19 and 11,185.44 is: 15,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,911.50 : 24,710.19 = 11,185.44 : x
  2. Step 2: Convert to fraction form
    17,911.50/24,710.19 = 11,185.44/x
  3. Step 3: Cross multiply
    17,911.50x = 24,710.19 × 11,185.44
  4. Step 4: Simplify right side
    17,911.50x = 276,394,213.03
  5. Step 5: Solve for x
    x = 276,394,213.03/17,911.50
  6. Step 6: Final answer
    x = 15,431.11

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1.5x scale

Why These Related Problems?

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