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Finding the Fourth Proportional to 325,906.20, 488,859.30 and 276,698.70

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Solution

The fourth proportional to 325,906.20, 488,859.30 and 276,698.70 is: 415,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,906.20 : 488,859.30 = 276,698.70 : x
  2. Step 2: Convert to fraction form
    325,906.20/488,859.30 = 276,698.70/x
  3. Step 3: Cross multiply
    325,906.20x = 488,859.30 × 276,698.70
  4. Step 4: Simplify right side
    325,906.20x = 135,266,732,792.91
  5. Step 5: Solve for x
    x = 135,266,732,792.91/325,906.20
  6. Step 6: Final answer
    x = 415,048.05

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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.