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Finding the Fourth Proportional to 325,872.70, 488,809.05 and 276,665.20

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Solution

The fourth proportional to 325,872.70, 488,809.05 and 276,665.20 is: 414,997.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,872.70 : 488,809.05 = 276,665.20 : x
  2. Step 2: Convert to fraction form
    325,872.70/488,809.05 = 276,665.20/x
  3. Step 3: Cross multiply
    325,872.70x = 488,809.05 × 276,665.20
  4. Step 4: Simplify right side
    325,872.70x = 135,236,453,580.06
  5. Step 5: Solve for x
    x = 135,236,453,580.06/325,872.70
  6. Step 6: Final answer
    x = 414,997.80

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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.