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Finding the Fourth Proportional to 256,772.22, 354,363.06 and 143,595.78

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Solution

The fourth proportional to 256,772.22, 354,363.06 and 143,595.78 is: 198,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,772.22 : 354,363.06 = 143,595.78 : x
  2. Step 2: Convert to fraction form
    256,772.22/354,363.06 = 143,595.78/x
  3. Step 3: Cross multiply
    256,772.22x = 354,363.06 × 143,595.78
  4. Step 4: Simplify right side
    256,772.22x = 50,885,040,003.89
  5. Step 5: Solve for x
    x = 50,885,040,003.89/256,772.22
  6. Step 6: Final answer
    x = 198,171.91

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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.