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Finding the Fourth Proportional to 82,611.88, 124,044.18 and 72,833.56

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Solution

The fourth proportional to 82,611.88, 124,044.18 and 72,833.56 is: 109,361.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,611.88 : 124,044.18 = 72,833.56 : x
  2. Step 2: Convert to fraction form
    82,611.88/124,044.18 = 72,833.56/x
  3. Step 3: Cross multiply
    82,611.88x = 124,044.18 × 72,833.56
  4. Step 4: Simplify right side
    82,611.88x = 9,034,579,226.68
  5. Step 5: Solve for x
    x = 9,034,579,226.68/82,611.88
  6. Step 6: Final answer
    x = 109,361.74

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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.