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Finding the Fourth Proportional to 172,847.80, 258,834.30 and 164,974.60

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Solution

The fourth proportional to 172,847.80, 258,834.30 and 164,974.60 is: 247,044.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,847.80 : 258,834.30 = 164,974.60 : x
  2. Step 2: Convert to fraction form
    172,847.80/258,834.30 = 164,974.60/x
  3. Step 3: Cross multiply
    172,847.80x = 258,834.30 × 164,974.60
  4. Step 4: Simplify right side
    172,847.80x = 42,701,085,108.78
  5. Step 5: Solve for x
    x = 42,701,085,108.78/172,847.80
  6. Step 6: Final answer
    x = 247,044.42

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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.