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Finding the Fourth Proportional to 175,361.74, 263,081.55 and 81,816.46

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Solution

The fourth proportional to 175,361.74, 263,081.55 and 81,816.46 is: 122,742.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,361.74 : 263,081.55 = 81,816.46 : x
  2. Step 2: Convert to fraction form
    175,361.74/263,081.55 = 81,816.46/x
  3. Step 3: Cross multiply
    175,361.74x = 263,081.55 × 81,816.46
  4. Step 4: Simplify right side
    175,361.74x = 21,524,401,112.31
  5. Step 5: Solve for x
    x = 21,524,401,112.31/175,361.74
  6. Step 6: Final answer
    x = 122,742.86

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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.