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Finding the Fourth Proportional to 256,866.44, 354,489.46 and 143,682.44

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Solution

The fourth proportional to 256,866.44, 354,489.46 and 143,682.44 is: 198,289.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,866.44 : 354,489.46 = 143,682.44 : x
  2. Step 2: Convert to fraction form
    256,866.44/354,489.46 = 143,682.44/x
  3. Step 3: Cross multiply
    256,866.44x = 354,489.46 × 143,682.44
  4. Step 4: Simplify right side
    256,866.44x = 50,933,910,567.08
  5. Step 5: Solve for x
    x = 50,933,910,567.08/256,866.44
  6. Step 6: Final answer
    x = 198,289.47

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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.