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Finding the Fourth Proportional to 167,785.70, 231,549.13 and 91,309.73

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Solution

The fourth proportional to 167,785.70, 231,549.13 and 91,309.73 is: 126,010.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,785.70 : 231,549.13 = 91,309.73 : x
  2. Step 2: Convert to fraction form
    167,785.70/231,549.13 = 91,309.73/x
  3. Step 3: Cross multiply
    167,785.70x = 231,549.13 × 91,309.73
  4. Step 4: Simplify right side
    167,785.70x = 21,142,688,191.44
  5. Step 5: Solve for x
    x = 21,142,688,191.44/167,785.70
  6. Step 6: Final answer
    x = 126,010.07

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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.