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Finding the Fourth Proportional to 256,523.82, 354,000.34 and 143,346.57

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Solution

The fourth proportional to 256,523.82, 354,000.34 and 143,346.57 is: 197,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,523.82 : 354,000.34 = 143,346.57 : x
  2. Step 2: Convert to fraction form
    256,523.82/354,000.34 = 143,346.57/x
  3. Step 3: Cross multiply
    256,523.82x = 354,000.34 × 143,346.57
  4. Step 4: Simplify right side
    256,523.82x = 50,744,734,517.83
  5. Step 5: Solve for x
    x = 50,744,734,517.83/256,523.82
  6. Step 6: Final answer
    x = 197,816.85

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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.