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Finding the Fourth Proportional to 68,076.82, 102,092.31 and 28,626.58

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Solution

The fourth proportional to 68,076.82, 102,092.31 and 28,626.58 is: 42,930.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,076.82 : 102,092.31 = 28,626.58 : x
  2. Step 2: Convert to fraction form
    68,076.82/102,092.31 = 28,626.58/x
  3. Step 3: Cross multiply
    68,076.82x = 102,092.31 × 28,626.58
  4. Step 4: Simplify right side
    68,076.82x = 2,922,553,679.60
  5. Step 5: Solve for x
    x = 2,922,553,679.60/68,076.82
  6. Step 6: Final answer
    x = 42,930.23

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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.