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Finding the Fourth Proportional to 68,074.86, 93,936.12 and 37,855.31

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Solution

The fourth proportional to 68,074.86, 93,936.12 and 37,855.31 is: 52,236.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,074.86 : 93,936.12 = 37,855.31 : x
  2. Step 2: Convert to fraction form
    68,074.86/93,936.12 = 37,855.31/x
  3. Step 3: Cross multiply
    68,074.86x = 93,936.12 × 37,855.31
  4. Step 4: Simplify right side
    68,074.86x = 3,555,980,331.16
  5. Step 5: Solve for x
    x = 3,555,980,331.16/68,074.86
  6. Step 6: Final answer
    x = 52,236.32

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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.