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Finding the Fourth Proportional to 55,361.45, 82,917.32 and 25,716.90

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Solution

The fourth proportional to 55,361.45, 82,917.32 and 25,716.90 is: 38,517.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,361.45 : 82,917.32 = 25,716.90 : x
  2. Step 2: Convert to fraction form
    55,361.45/82,917.32 = 25,716.90/x
  3. Step 3: Cross multiply
    55,361.45x = 82,917.32 × 25,716.90
  4. Step 4: Simplify right side
    55,361.45x = 2,132,375,883.54
  5. Step 5: Solve for x
    x = 2,132,375,883.54/55,361.45
  6. Step 6: Final answer
    x = 38,517.35

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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.