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Finding the Fourth Proportional to 68,291.64, 102,433.77 and 26,191.89

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Solution

The fourth proportional to 68,291.64, 102,433.77 and 26,191.89 is: 39,286.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,291.64 : 102,433.77 = 26,191.89 : x
  2. Step 2: Convert to fraction form
    68,291.64/102,433.77 = 26,191.89/x
  3. Step 3: Cross multiply
    68,291.64x = 102,433.77 × 26,191.89
  4. Step 4: Simplify right side
    68,291.64x = 2,682,934,036.13
  5. Step 5: Solve for x
    x = 2,682,934,036.13/68,291.64
  6. Step 6: Final answer
    x = 39,286.42

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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.