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Finding the Fourth Proportional to 168,412.31, 252,469.83 and 68,655.95

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Solution

The fourth proportional to 168,412.31, 252,469.83 and 68,655.95 is: 102,923.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,412.31 : 252,469.83 = 68,655.95 : x
  2. Step 2: Convert to fraction form
    168,412.31/252,469.83 = 68,655.95/x
  3. Step 3: Cross multiply
    168,412.31x = 252,469.83 × 68,655.95
  4. Step 4: Simplify right side
    168,412.31x = 17,333,556,024.99
  5. Step 5: Solve for x
    x = 17,333,556,024.99/168,412.31
  6. Step 6: Final answer
    x = 102,923.33

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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.