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Finding the Fourth Proportional to 386,691.93, 533,698.99 and 225,546.97

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Solution

The fourth proportional to 386,691.93, 533,698.99 and 225,546.97 is: 311,292.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,691.93 : 533,698.99 = 225,546.97 : x
  2. Step 2: Convert to fraction form
    386,691.93/533,698.99 = 225,546.97/x
  3. Step 3: Cross multiply
    386,691.93x = 533,698.99 × 225,546.97
  4. Step 4: Simplify right side
    386,691.93x = 120,374,190,086.56
  5. Step 5: Solve for x
    x = 120,374,190,086.56/386,691.93
  6. Step 6: Final answer
    x = 311,292.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.