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Finding the Fourth Proportional to 167,131.55, 230,640.30 and 90,650.40

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Solution

The fourth proportional to 167,131.55, 230,640.30 and 90,650.40 is: 125,096.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,131.55 : 230,640.30 = 90,650.40 : x
  2. Step 2: Convert to fraction form
    167,131.55/230,640.30 = 90,650.40/x
  3. Step 3: Cross multiply
    167,131.55x = 230,640.30 × 90,650.40
  4. Step 4: Simplify right side
    167,131.55x = 20,907,635,451.12
  5. Step 5: Solve for x
    x = 20,907,635,451.12/167,131.55
  6. Step 6: Final answer
    x = 125,096.88

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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.