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Finding the Fourth Proportional to 68,999.96, 103,540.10 and 29,016.05

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Solution

The fourth proportional to 68,999.96, 103,540.10 and 29,016.05 is: 43,540.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,999.96 : 103,540.10 = 29,016.05 : x
  2. Step 2: Convert to fraction form
    68,999.96/103,540.10 = 29,016.05/x
  3. Step 3: Cross multiply
    68,999.96x = 103,540.10 × 29,016.05
  4. Step 4: Simplify right side
    68,999.96x = 3,004,324,718.61
  5. Step 5: Solve for x
    x = 3,004,324,718.61/68,999.96
  6. Step 6: Final answer
    x = 43,540.96

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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.