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Finding the Fourth Proportional to 115,735.68, 159,766.92 and 67,992.12

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Solution

The fourth proportional to 115,735.68, 159,766.92 and 67,992.12 is: 93,859.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,735.68 : 159,766.92 = 67,992.12 : x
  2. Step 2: Convert to fraction form
    115,735.68/159,766.92 = 67,992.12/x
  3. Step 3: Cross multiply
    115,735.68x = 159,766.92 × 67,992.12
  4. Step 4: Simplify right side
    115,735.68x = 10,862,891,596.67
  5. Step 5: Solve for x
    x = 10,862,891,596.67/115,735.68
  6. Step 6: Final answer
    x = 93,859.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.