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Finding the Fourth Proportional to 78,845.92, 118,243.44 and 26,241.44

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Solution

The fourth proportional to 78,845.92, 118,243.44 and 26,241.44 is: 39,353.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,845.92 : 118,243.44 = 26,241.44 : x
  2. Step 2: Convert to fraction form
    78,845.92/118,243.44 = 26,241.44/x
  3. Step 3: Cross multiply
    78,845.92x = 118,243.44 × 26,241.44
  4. Step 4: Simplify right side
    78,845.92x = 3,102,878,136.15
  5. Step 5: Solve for x
    x = 3,102,878,136.15/78,845.92
  6. Step 6: Final answer
    x = 39,353.69

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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.