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Finding the Fourth Proportional to 112,468.60, 155,207.31 and 61,481.44

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Solution

The fourth proportional to 112,468.60, 155,207.31 and 61,481.44 is: 84,844.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,468.60 : 155,207.31 = 61,481.44 : x
  2. Step 2: Convert to fraction form
    112,468.60/155,207.31 = 61,481.44/x
  3. Step 3: Cross multiply
    112,468.60x = 155,207.31 × 61,481.44
  4. Step 4: Simplify right side
    112,468.60x = 9,542,368,917.33
  5. Step 5: Solve for x
    x = 9,542,368,917.33/112,468.60
  6. Step 6: Final answer
    x = 84,844.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.