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Finding the Fourth Proportional to 167,870.80, 251,806.20 and 158,021.20

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Solution

The fourth proportional to 167,870.80, 251,806.20 and 158,021.20 is: 237,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,870.80 : 251,806.20 = 158,021.20 : x
  2. Step 2: Convert to fraction form
    167,870.80/251,806.20 = 158,021.20/x
  3. Step 3: Cross multiply
    167,870.80x = 251,806.20 × 158,021.20
  4. Step 4: Simplify right side
    167,870.80x = 39,790,717,891.44
  5. Step 5: Solve for x
    x = 39,790,717,891.44/167,870.80
  6. Step 6: Final answer
    x = 237,031.80

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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.