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Finding the Fourth Proportional to 321,961.20, 483,402.60 and 181,993.20

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Solution

The fourth proportional to 321,961.20, 483,402.60 and 181,993.20 is: 273,250.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,961.20 : 483,402.60 = 181,993.20 : x
  2. Step 2: Convert to fraction form
    321,961.20/483,402.60 = 181,993.20/x
  3. Step 3: Cross multiply
    321,961.20x = 483,402.60 × 181,993.20
  4. Step 4: Simplify right side
    321,961.20x = 87,975,986,062.32
  5. Step 5: Solve for x
    x = 87,975,986,062.32/321,961.20
  6. Step 6: Final answer
    x = 273,250.27

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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.