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Finding the Fourth Proportional to 192,806.06, 289,268.15 and 86,279.65

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Solution

The fourth proportional to 192,806.06, 289,268.15 and 86,279.65 is: 129,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,806.06 : 289,268.15 = 86,279.65 : x
  2. Step 2: Convert to fraction form
    192,806.06/289,268.15 = 86,279.65/x
  3. Step 3: Cross multiply
    192,806.06x = 289,268.15 × 86,279.65
  4. Step 4: Simplify right side
    192,806.06x = 24,957,953,583.58
  5. Step 5: Solve for x
    x = 24,957,953,583.58/192,806.06
  6. Step 6: Final answer
    x = 129,445.90

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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.