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Finding the Fourth Proportional to 455,972.60, 683,997.78 and 119,057.96

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Solution

The fourth proportional to 455,972.60, 683,997.78 and 119,057.96 is: 178,597.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,972.60 : 683,997.78 = 119,057.96 : x
  2. Step 2: Convert to fraction form
    455,972.60/683,997.78 = 119,057.96/x
  3. Step 3: Cross multiply
    455,972.60x = 683,997.78 × 119,057.96
  4. Step 4: Simplify right side
    455,972.60x = 81,435,380,331.33
  5. Step 5: Solve for x
    x = 81,435,380,331.33/455,972.60
  6. Step 6: Final answer
    x = 178,597.09

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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.