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Finding the Fourth Proportional to 42,879.60, 64,241.52 and 41,946.48

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Solution

The fourth proportional to 42,879.60, 64,241.52 and 41,946.48 is: 62,843.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,879.60 : 64,241.52 = 41,946.48 : x
  2. Step 2: Convert to fraction form
    42,879.60/64,241.52 = 41,946.48/x
  3. Step 3: Cross multiply
    42,879.60x = 64,241.52 × 41,946.48
  4. Step 4: Simplify right side
    42,879.60x = 2,694,705,633.85
  5. Step 5: Solve for x
    x = 2,694,705,633.85/42,879.60
  6. Step 6: Final answer
    x = 62,843.53

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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.