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Finding the Fourth Proportional to 325,691.78, 488,768.52 and 148,221.60

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Solution

The fourth proportional to 325,691.78, 488,768.52 and 148,221.60 is: 222,437.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,691.78 : 488,768.52 = 148,221.60 : x
  2. Step 2: Convert to fraction form
    325,691.78/488,768.52 = 148,221.60/x
  3. Step 3: Cross multiply
    325,691.78x = 488,768.52 × 148,221.60
  4. Step 4: Simplify right side
    325,691.78x = 72,446,052,064.03
  5. Step 5: Solve for x
    x = 72,446,052,064.03/325,691.78
  6. Step 6: Final answer
    x = 222,437.46

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1.5x scale

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.