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Finding the Fourth Proportional to 17,221.44, 25,832.64 and 6,128.96

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Solution

The fourth proportional to 17,221.44, 25,832.64 and 6,128.96 is: 9,193.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,221.44 : 25,832.64 = 6,128.96 : x
  2. Step 2: Convert to fraction form
    17,221.44/25,832.64 = 6,128.96/x
  3. Step 3: Cross multiply
    17,221.44x = 25,832.64 × 6,128.96
  4. Step 4: Simplify right side
    17,221.44x = 158,327,217.25
  5. Step 5: Solve for x
    x = 158,327,217.25/17,221.44
  6. Step 6: Final answer
    x = 9,193.61

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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.