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Finding the Fourth Proportional to 167,140.70, 230,652.81 and 90,659.60

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Solution

The fourth proportional to 167,140.70, 230,652.81 and 90,659.60 is: 125,109.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,140.70 : 230,652.81 = 90,659.60 : x
  2. Step 2: Convert to fraction form
    167,140.70/230,652.81 = 90,659.60/x
  3. Step 3: Cross multiply
    167,140.70x = 230,652.81 × 90,659.60
  4. Step 4: Simplify right side
    167,140.70x = 20,910,891,493.48
  5. Step 5: Solve for x
    x = 20,910,891,493.48/167,140.70
  6. Step 6: Final answer
    x = 125,109.51

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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.