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Finding the Fourth Proportional to 26,091.65, 39,137.65 and 7,371.61

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Solution

The fourth proportional to 26,091.65, 39,137.65 and 7,371.61 is: 11,057.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,091.65 : 39,137.65 = 7,371.61 : x
  2. Step 2: Convert to fraction form
    26,091.65/39,137.65 = 7,371.61/x
  3. Step 3: Cross multiply
    26,091.65x = 39,137.65 × 7,371.61
  4. Step 4: Simplify right side
    26,091.65x = 288,507,375.84
  5. Step 5: Solve for x
    x = 288,507,375.84/26,091.65
  6. Step 6: Final answer
    x = 11,057.46

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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.