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Finding the Fourth Proportional to 260,763.67, 391,145.52 and 167,859.91

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Solution

The fourth proportional to 260,763.67, 391,145.52 and 167,859.91 is: 251,789.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,763.67 : 391,145.52 = 167,859.91 : x
  2. Step 2: Convert to fraction form
    260,763.67/391,145.52 = 167,859.91/x
  3. Step 3: Cross multiply
    260,763.67x = 391,145.52 × 167,859.91
  4. Step 4: Simplify right side
    260,763.67x = 65,657,651,784.10
  5. Step 5: Solve for x
    x = 65,657,651,784.10/260,763.67
  6. Step 6: Final answer
    x = 251,789.87

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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.