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Finding the Fourth Proportional to 260,711.70, 391,067.55 and 167,399.70

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Solution

The fourth proportional to 260,711.70, 391,067.55 and 167,399.70 is: 251,099.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,711.70 : 391,067.55 = 167,399.70 : x
  2. Step 2: Convert to fraction form
    260,711.70/391,067.55 = 167,399.70/x
  3. Step 3: Cross multiply
    260,711.70x = 391,067.55 × 167,399.70
  4. Step 4: Simplify right side
    260,711.70x = 65,464,590,549.74
  5. Step 5: Solve for x
    x = 65,464,590,549.74/260,711.70
  6. Step 6: Final answer
    x = 251,099.55

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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.