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Finding the Fourth Proportional to 68,019.48, 101,912.40 and 54,022.68

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Solution

The fourth proportional to 68,019.48, 101,912.40 and 54,022.68 is: 80,941.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,019.48 : 101,912.40 = 54,022.68 : x
  2. Step 2: Convert to fraction form
    68,019.48/101,912.40 = 54,022.68/x
  3. Step 3: Cross multiply
    68,019.48x = 101,912.40 × 54,022.68
  4. Step 4: Simplify right side
    68,019.48x = 5,505,580,973.23
  5. Step 5: Solve for x
    x = 5,505,580,973.23/68,019.48
  6. Step 6: Final answer
    x = 80,941.24

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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.