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Finding the Fourth Proportional to 220,789.60, 331,084.80 and 62,980.48

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Solution

The fourth proportional to 220,789.60, 331,084.80 and 62,980.48 is: 94,442.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,789.60 : 331,084.80 = 62,980.48 : x
  2. Step 2: Convert to fraction form
    220,789.60/331,084.80 = 62,980.48/x
  3. Step 3: Cross multiply
    220,789.60x = 331,084.80 × 62,980.48
  4. Step 4: Simplify right side
    220,789.60x = 20,851,879,624.70
  5. Step 5: Solve for x
    x = 20,851,879,624.70/220,789.60
  6. Step 6: Final answer
    x = 94,442.31

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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.