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Finding the Fourth Proportional to 322,889.90, 484,018.64 and 120,337.70

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Solution

The fourth proportional to 322,889.90, 484,018.64 and 120,337.70 is: 180,388.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,889.90 : 484,018.64 = 120,337.70 : x
  2. Step 2: Convert to fraction form
    322,889.90/484,018.64 = 120,337.70/x
  3. Step 3: Cross multiply
    322,889.90x = 484,018.64 × 120,337.70
  4. Step 4: Simplify right side
    322,889.90x = 58,245,690,046.82
  5. Step 5: Solve for x
    x = 58,245,690,046.82/322,889.90
  6. Step 6: Final answer
    x = 180,388.71

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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.