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Finding the Fourth Proportional to 68,418.66, 102,657.55 and 36,791.75

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Solution

The fourth proportional to 68,418.66, 102,657.55 and 36,791.75 is: 55,203.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,418.66 : 102,657.55 = 36,791.75 : x
  2. Step 2: Convert to fraction form
    68,418.66/102,657.55 = 36,791.75/x
  3. Step 3: Cross multiply
    68,418.66x = 102,657.55 × 36,791.75
  4. Step 4: Simplify right side
    68,418.66x = 3,776,951,263.84
  5. Step 5: Solve for x
    x = 3,776,951,263.84/68,418.66
  6. Step 6: Final answer
    x = 55,203.53

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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.