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Finding the Fourth Proportional to 68,915.33, 103,346.22 and 26,789.83

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Solution

The fourth proportional to 68,915.33, 103,346.22 and 26,789.83 is: 40,174.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,915.33 : 103,346.22 = 26,789.83 : x
  2. Step 2: Convert to fraction form
    68,915.33/103,346.22 = 26,789.83/x
  3. Step 3: Cross multiply
    68,915.33x = 103,346.22 × 26,789.83
  4. Step 4: Simplify right side
    68,915.33x = 2,768,627,923.31
  5. Step 5: Solve for x
    x = 2,768,627,923.31/68,915.33
  6. Step 6: Final answer
    x = 40,174.34

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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.