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Finding the Fourth Proportional to 235,796.57, 325,399.28 and 128,366.57

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Solution

The fourth proportional to 235,796.57, 325,399.28 and 128,366.57 is: 177,145.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,796.57 : 325,399.28 = 128,366.57 : x
  2. Step 2: Convert to fraction form
    235,796.57/325,399.28 = 128,366.57/x
  3. Step 3: Cross multiply
    235,796.57x = 325,399.28 × 128,366.57
  4. Step 4: Simplify right side
    235,796.57x = 41,770,389,625.73
  5. Step 5: Solve for x
    x = 41,770,389,625.73/235,796.57
  6. Step 6: Final answer
    x = 177,145.88

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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.