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Finding the Fourth Proportional to 82,891.70, 124,361.80 and 26,730.66

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Solution

The fourth proportional to 82,891.70, 124,361.80 and 26,730.66 is: 40,103.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,891.70 : 124,361.80 = 26,730.66 : x
  2. Step 2: Convert to fraction form
    82,891.70/124,361.80 = 26,730.66/x
  3. Step 3: Cross multiply
    82,891.70x = 124,361.80 × 26,730.66
  4. Step 4: Simplify right side
    82,891.70x = 3,324,272,992.79
  5. Step 5: Solve for x
    x = 3,324,272,992.79/82,891.70
  6. Step 6: Final answer
    x = 40,103.81

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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.