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Finding the Fourth Proportional to 206,578.20, 309,429.90 and 184,416.60

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Solution

The fourth proportional to 206,578.20, 309,429.90 and 184,416.60 is: 276,234.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,578.20 : 309,429.90 = 184,416.60 : x
  2. Step 2: Convert to fraction form
    206,578.20/309,429.90 = 184,416.60/x
  3. Step 3: Cross multiply
    206,578.20x = 309,429.90 × 184,416.60
  4. Step 4: Simplify right side
    206,578.20x = 57,064,010,096.34
  5. Step 5: Solve for x
    x = 57,064,010,096.34/206,578.20
  6. Step 6: Final answer
    x = 276,234.42

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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.