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Finding the Fourth Proportional to 86,791.64, 119,766.80 and 48,544.56

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Solution

The fourth proportional to 86,791.64, 119,766.80 and 48,544.56 is: 66,988.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,791.64 : 119,766.80 = 48,544.56 : x
  2. Step 2: Convert to fraction form
    86,791.64/119,766.80 = 48,544.56/x
  3. Step 3: Cross multiply
    86,791.64x = 119,766.80 × 48,544.56
  4. Step 4: Simplify right side
    86,791.64x = 5,814,026,729.97
  5. Step 5: Solve for x
    x = 5,814,026,729.97/86,791.64
  6. Step 6: Final answer
    x = 66,988.33

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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.