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Finding the Fourth Proportional to 353,105.80, 529,593.90 and 219,747.40

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Solution

The fourth proportional to 353,105.80, 529,593.90 and 219,747.40 is: 329,580.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,105.80 : 529,593.90 = 219,747.40 : x
  2. Step 2: Convert to fraction form
    353,105.80/529,593.90 = 219,747.40/x
  3. Step 3: Cross multiply
    353,105.80x = 529,593.90 × 219,747.40
  4. Step 4: Simplify right side
    353,105.80x = 116,376,882,580.86
  5. Step 5: Solve for x
    x = 116,376,882,580.86/353,105.80
  6. Step 6: Final answer
    x = 329,580.77

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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.