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Finding the Fourth Proportional to 161,640.60, 223,003.72 and 161,391.39

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Solution

The fourth proportional to 161,640.60, 223,003.72 and 161,391.39 is: 222,659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,640.60 : 223,003.72 = 161,391.39 : x
  2. Step 2: Convert to fraction form
    161,640.60/223,003.72 = 161,391.39/x
  3. Step 3: Cross multiply
    161,640.60x = 223,003.72 × 161,391.39
  4. Step 4: Simplify right side
    161,640.60x = 35,990,878,803.62
  5. Step 5: Solve for x
    x = 35,990,878,803.62/161,640.60
  6. Step 6: Final answer
    x = 222,659.90

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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.