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Finding the Fourth Proportional to 275,168.13, 379,571.13 and 173,031.90

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Solution

The fourth proportional to 275,168.13, 379,571.13 and 173,031.90 is: 238,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,168.13 : 379,571.13 = 173,031.90 : x
  2. Step 2: Convert to fraction form
    275,168.13/379,571.13 = 173,031.90/x
  3. Step 3: Cross multiply
    275,168.13x = 379,571.13 × 173,031.90
  4. Step 4: Simplify right side
    275,168.13x = 65,677,913,809.05
  5. Step 5: Solve for x
    x = 65,677,913,809.05/275,168.13
  6. Step 6: Final answer
    x = 238,682.85

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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.