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Finding the Fourth Proportional to 68,766.87, 103,151.22 and 22,019.75

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Solution

The fourth proportional to 68,766.87, 103,151.22 and 22,019.75 is: 33,029.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,766.87 : 103,151.22 = 22,019.75 : x
  2. Step 2: Convert to fraction form
    68,766.87/103,151.22 = 22,019.75/x
  3. Step 3: Cross multiply
    68,766.87x = 103,151.22 × 22,019.75
  4. Step 4: Simplify right side
    68,766.87x = 2,271,364,076.60
  5. Step 5: Solve for x
    x = 2,271,364,076.60/68,766.87
  6. Step 6: Final answer
    x = 33,029.92

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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.