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Finding the Fourth Proportional to 325,630.60, 488,591.70 and 148,046.20

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Solution

The fourth proportional to 325,630.60, 488,591.70 and 148,046.20 is: 222,135.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,630.60 : 488,591.70 = 148,046.20 : x
  2. Step 2: Convert to fraction form
    325,630.60/488,591.70 = 148,046.20/x
  3. Step 3: Cross multiply
    325,630.60x = 488,591.70 × 148,046.20
  4. Step 4: Simplify right side
    325,630.60x = 72,334,144,536.54
  5. Step 5: Solve for x
    x = 72,334,144,536.54/325,630.60
  6. Step 6: Final answer
    x = 222,135.59

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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.