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Finding the Fourth Proportional to 55,067.96, 82,019.08 and 54,799.46

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Solution

The fourth proportional to 55,067.96, 82,019.08 and 54,799.46 is: 81,619.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,067.96 : 82,019.08 = 54,799.46 : x
  2. Step 2: Convert to fraction form
    55,067.96/82,019.08 = 54,799.46/x
  3. Step 3: Cross multiply
    55,067.96x = 82,019.08 × 54,799.46
  4. Step 4: Simplify right side
    55,067.96x = 4,494,601,293.70
  5. Step 5: Solve for x
    x = 4,494,601,293.70/55,067.96
  6. Step 6: Final answer
    x = 81,619.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.