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Finding the Fourth Proportional to 82,791.77, 124,745.58 and 68,324.76

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Solution

The fourth proportional to 82,791.77, 124,745.58 and 68,324.76 is: 102,947.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,791.77 : 124,745.58 = 68,324.76 : x
  2. Step 2: Convert to fraction form
    82,791.77/124,745.58 = 68,324.76/x
  3. Step 3: Cross multiply
    82,791.77x = 124,745.58 × 68,324.76
  4. Step 4: Simplify right side
    82,791.77x = 8,523,211,814.56
  5. Step 5: Solve for x
    x = 8,523,211,814.56/82,791.77
  6. Step 6: Final answer
    x = 102,947.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.