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Finding the Fourth Proportional to 18,611.96, 27,924 and 8,752.22

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Solution

The fourth proportional to 18,611.96, 27,924 and 8,752.22 is: 13,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.96 : 27,924 = 8,752.22 : x
  2. Step 2: Convert to fraction form
    18,611.96/27,924 = 8,752.22/x
  3. Step 3: Cross multiply
    18,611.96x = 27,924 × 8,752.22
  4. Step 4: Simplify right side
    18,611.96x = 244,396,991.28
  5. Step 5: Solve for x
    x = 244,396,991.28/18,611.96
  6. Step 6: Final answer
    x = 13,131.18

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1.5x scale

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.