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Finding the Fourth Proportional to 19,995.96, 29,993.94 and 11,217.72

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Solution

The fourth proportional to 19,995.96, 29,993.94 and 11,217.72 is: 16,826.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.96 : 29,993.94 = 11,217.72 : x
  2. Step 2: Convert to fraction form
    19,995.96/29,993.94 = 11,217.72/x
  3. Step 3: Cross multiply
    19,995.96x = 29,993.94 × 11,217.72
  4. Step 4: Simplify right side
    19,995.96x = 336,463,620.62
  5. Step 5: Solve for x
    x = 336,463,620.62/19,995.96
  6. Step 6: Final answer
    x = 16,826.58

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Similar ratio
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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.