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Finding the Fourth Proportional to 260,852.40, 391,424.40 and 111,067.20

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Solution

The fourth proportional to 260,852.40, 391,424.40 and 111,067.20 is: 166,662.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,852.40 : 391,424.40 = 111,067.20 : x
  2. Step 2: Convert to fraction form
    260,852.40/391,424.40 = 111,067.20/x
  3. Step 3: Cross multiply
    260,852.40x = 391,424.40 × 111,067.20
  4. Step 4: Simplify right side
    260,852.40x = 43,474,412,119.68
  5. Step 5: Solve for x
    x = 43,474,412,119.68/260,852.40
  6. Step 6: Final answer
    x = 166,662.88

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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.