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Finding the Fourth Proportional to 26,616.01, 39,917.20 and 7,891.67

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Solution

The fourth proportional to 26,616.01, 39,917.20 and 7,891.67 is: 11,835.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,616.01 : 39,917.20 = 7,891.67 : x
  2. Step 2: Convert to fraction form
    26,616.01/39,917.20 = 7,891.67/x
  3. Step 3: Cross multiply
    26,616.01x = 39,917.20 × 7,891.67
  4. Step 4: Simplify right side
    26,616.01x = 315,013,369.72
  5. Step 5: Solve for x
    x = 315,013,369.72/26,616.01
  6. Step 6: Final answer
    x = 11,835.48

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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.