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Finding the Fourth Proportional to 322,890.70, 484,336.44 and 154,371.40

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Solution

The fourth proportional to 322,890.70, 484,336.44 and 154,371.40 is: 231,557.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,890.70 : 484,336.44 = 154,371.40 : x
  2. Step 2: Convert to fraction form
    322,890.70/484,336.44 = 154,371.40/x
  3. Step 3: Cross multiply
    322,890.70x = 484,336.44 × 154,371.40
  4. Step 4: Simplify right side
    322,890.70x = 74,767,694,313.82
  5. Step 5: Solve for x
    x = 74,767,694,313.82/322,890.70
  6. Step 6: Final answer
    x = 231,557.29

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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.