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Finding the Fourth Proportional to 256,231.62, 353,599.56 and 143,054.28

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Solution

The fourth proportional to 256,231.62, 353,599.56 and 143,054.28 is: 197,414.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,231.62 : 353,599.56 = 143,054.28 : x
  2. Step 2: Convert to fraction form
    256,231.62/353,599.56 = 143,054.28/x
  3. Step 3: Cross multiply
    256,231.62x = 353,599.56 × 143,054.28
  4. Step 4: Simplify right side
    256,231.62x = 50,583,930,464.12
  5. Step 5: Solve for x
    x = 50,583,930,464.12/256,231.62
  6. Step 6: Final answer
    x = 197,414.86

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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.