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Finding the Fourth Proportional to 322,269.80, 482,828.70 and 155,690.60

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Solution

The fourth proportional to 322,269.80, 482,828.70 and 155,690.60 is: 233,257.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,269.80 : 482,828.70 = 155,690.60 : x
  2. Step 2: Convert to fraction form
    322,269.80/482,828.70 = 155,690.60/x
  3. Step 3: Cross multiply
    322,269.80x = 482,828.70 × 155,690.60
  4. Step 4: Simplify right side
    322,269.80x = 75,171,890,000.22
  5. Step 5: Solve for x
    x = 75,171,890,000.22/322,269.80
  6. Step 6: Final answer
    x = 233,257.63

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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.