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Finding the Fourth Proportional to 68,735.40, 103,078.80 and 24,363.60

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Solution

The fourth proportional to 68,735.40, 103,078.80 and 24,363.60 is: 36,536.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,735.40 : 103,078.80 = 24,363.60 : x
  2. Step 2: Convert to fraction form
    68,735.40/103,078.80 = 24,363.60/x
  3. Step 3: Cross multiply
    68,735.40x = 103,078.80 × 24,363.60
  4. Step 4: Simplify right side
    68,735.40x = 2,511,370,651.68
  5. Step 5: Solve for x
    x = 2,511,370,651.68/68,735.40
  6. Step 6: Final answer
    x = 36,536.79

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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.