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Finding the Fourth Proportional to 68,388.90, 102,629.16 and 24,015.80

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Solution

The fourth proportional to 68,388.90, 102,629.16 and 24,015.80 is: 36,039.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,388.90 : 102,629.16 = 24,015.80 : x
  2. Step 2: Convert to fraction form
    68,388.90/102,629.16 = 24,015.80/x
  3. Step 3: Cross multiply
    68,388.90x = 102,629.16 × 24,015.80
  4. Step 4: Simplify right side
    68,388.90x = 2,464,721,380.73
  5. Step 5: Solve for x
    x = 2,464,721,380.73/68,388.90
  6. Step 6: Final answer
    x = 36,039.79

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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.