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Finding the Fourth Proportional to 82,759.62, 124,065.60 and 68,833.89

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Solution

The fourth proportional to 82,759.62, 124,065.60 and 68,833.89 is: 103,189.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,759.62 : 124,065.60 = 68,833.89 : x
  2. Step 2: Convert to fraction form
    82,759.62/124,065.60 = 68,833.89/x
  3. Step 3: Cross multiply
    82,759.62x = 124,065.60 × 68,833.89
  4. Step 4: Simplify right side
    82,759.62x = 8,539,917,863.18
  5. Step 5: Solve for x
    x = 8,539,917,863.18/82,759.62
  6. Step 6: Final answer
    x = 103,189.43

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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.