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Finding the Fourth Proportional to 68,791.15, 103,166.29 and 26,661.84

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Solution

The fourth proportional to 68,791.15, 103,166.29 and 26,661.84 is: 39,984.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,791.15 : 103,166.29 = 26,661.84 : x
  2. Step 2: Convert to fraction form
    68,791.15/103,166.29 = 26,661.84/x
  3. Step 3: Cross multiply
    68,791.15x = 103,166.29 × 26,661.84
  4. Step 4: Simplify right side
    68,791.15x = 2,750,603,117.37
  5. Step 5: Solve for x
    x = 2,750,603,117.37/68,791.15
  6. Step 6: Final answer
    x = 39,984.84

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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.