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Finding the Fourth Proportional to 68,395.89, 94,425.57 and 52,135.55

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Solution

The fourth proportional to 68,395.89, 94,425.57 and 52,135.55 is: 71,976.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,395.89 : 94,425.57 = 52,135.55 : x
  2. Step 2: Convert to fraction form
    68,395.89/94,425.57 = 52,135.55/x
  3. Step 3: Cross multiply
    68,395.89x = 94,425.57 × 52,135.55
  4. Step 4: Simplify right side
    68,395.89x = 4,922,928,553.89
  5. Step 5: Solve for x
    x = 4,922,928,553.89/68,395.89
  6. Step 6: Final answer
    x = 71,976.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.