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Finding the Fourth Proportional to 136,745.82, 206,212.23 and 134,874.72

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Solution

The fourth proportional to 136,745.82, 206,212.23 and 134,874.72 is: 203,390.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,745.82 : 206,212.23 = 134,874.72 : x
  2. Step 2: Convert to fraction form
    136,745.82/206,212.23 = 134,874.72/x
  3. Step 3: Cross multiply
    136,745.82x = 206,212.23 × 134,874.72
  4. Step 4: Simplify right side
    136,745.82x = 27,812,816,781.83
  5. Step 5: Solve for x
    x = 27,812,816,781.83/136,745.82
  6. Step 6: Final answer
    x = 203,390.62

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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.