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Finding the Fourth Proportional to 455,680.92, 683,512.84 and 136,049.79

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Solution

The fourth proportional to 455,680.92, 683,512.84 and 136,049.79 is: 204,072.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,680.92 : 683,512.84 = 136,049.79 : x
  2. Step 2: Convert to fraction form
    455,680.92/683,512.84 = 136,049.79/x
  3. Step 3: Cross multiply
    455,680.92x = 683,512.84 × 136,049.79
  4. Step 4: Simplify right side
    455,680.92x = 92,991,778,344.30
  5. Step 5: Solve for x
    x = 92,991,778,344.30/455,680.92
  6. Step 6: Final answer
    x = 204,072.14

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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.