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Finding the Fourth Proportional to 68,703.30, 103,112.55 and 33,672.90

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Solution

The fourth proportional to 68,703.30, 103,112.55 and 33,672.90 is: 50,537.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,703.30 : 103,112.55 = 33,672.90 : x
  2. Step 2: Convert to fraction form
    68,703.30/103,112.55 = 33,672.90/x
  3. Step 3: Cross multiply
    68,703.30x = 103,112.55 × 33,672.90
  4. Step 4: Simplify right side
    68,703.30x = 3,472,098,584.90
  5. Step 5: Solve for x
    x = 3,472,098,584.90/68,703.30
  6. Step 6: Final answer
    x = 50,537.58

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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.