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Finding the Fourth Proportional to 68,998.96, 103,538.60 and 29,015.05

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Solution

The fourth proportional to 68,998.96, 103,538.60 and 29,015.05 is: 43,539.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,998.96 : 103,538.60 = 29,015.05 : x
  2. Step 2: Convert to fraction form
    68,998.96/103,538.60 = 29,015.05/x
  3. Step 3: Cross multiply
    68,998.96x = 103,538.60 × 29,015.05
  4. Step 4: Simplify right side
    68,998.96x = 3,004,177,655.93
  5. Step 5: Solve for x
    x = 3,004,177,655.93/68,998.96
  6. Step 6: Final answer
    x = 43,539.46

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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.