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Finding the Fourth Proportional to 327,331.80, 490,633.20 and 127,585.80

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Solution

The fourth proportional to 327,331.80, 490,633.20 and 127,585.80 is: 191,236.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,331.80 : 490,633.20 = 127,585.80 : x
  2. Step 2: Convert to fraction form
    327,331.80/490,633.20 = 127,585.80/x
  3. Step 3: Cross multiply
    327,331.80x = 490,633.20 × 127,585.80
  4. Step 4: Simplify right side
    327,331.80x = 62,597,829,328.56
  5. Step 5: Solve for x
    x = 62,597,829,328.56/327,331.80
  6. Step 6: Final answer
    x = 191,236.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.