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Finding the Fourth Proportional to 192,679.52, 288,645.26 and 141,986.53

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Solution

The fourth proportional to 192,679.52, 288,645.26 and 141,986.53 is: 212,704.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,679.52 : 288,645.26 = 141,986.53 : x
  2. Step 2: Convert to fraction form
    192,679.52/288,645.26 = 141,986.53/x
  3. Step 3: Cross multiply
    192,679.52x = 288,645.26 × 141,986.53
  4. Step 4: Simplify right side
    192,679.52x = 40,983,738,519.22
  5. Step 5: Solve for x
    x = 40,983,738,519.22/192,679.52
  6. Step 6: Final answer
    x = 212,704.18

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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.