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Finding the Fourth Proportional to 256,811.00, 354,397.25 and 143,633.75

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Solution

The fourth proportional to 256,811.00, 354,397.25 and 143,633.75 is: 198,213.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,811.00 : 354,397.25 = 143,633.75 : x
  2. Step 2: Convert to fraction form
    256,811.00/354,397.25 = 143,633.75/x
  3. Step 3: Cross multiply
    256,811.00x = 354,397.25 × 143,633.75
  4. Step 4: Simplify right side
    256,811.00x = 50,903,404,594.29
  5. Step 5: Solve for x
    x = 50,903,404,594.29/256,811.00
  6. Step 6: Final answer
    x = 198,213.49

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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.