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Finding the Fourth Proportional to 386,544.25, 533,489.39 and 235,728.73

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Solution

The fourth proportional to 386,544.25, 533,489.39 and 235,728.73 is: 325,341.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,544.25 : 533,489.39 = 235,728.73 : x
  2. Step 2: Convert to fraction form
    386,544.25/533,489.39 = 235,728.73/x
  3. Step 3: Cross multiply
    386,544.25x = 533,489.39 × 235,728.73
  4. Step 4: Simplify right side
    386,544.25x = 125,758,775,194.53
  5. Step 5: Solve for x
    x = 125,758,775,194.53/386,544.25
  6. Step 6: Final answer
    x = 325,341.21

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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.