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Finding the Fourth Proportional to 361,172.80, 541,260.97 and 272,328.66

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Solution

The fourth proportional to 361,172.80, 541,260.97 and 272,328.66 is: 408,117.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,172.80 : 541,260.97 = 272,328.66 : x
  2. Step 2: Convert to fraction form
    361,172.80/541,260.97 = 272,328.66/x
  3. Step 3: Cross multiply
    361,172.80x = 541,260.97 × 272,328.66
  4. Step 4: Simplify right side
    361,172.80x = 147,400,873,616.17
  5. Step 5: Solve for x
    x = 147,400,873,616.17/361,172.80
  6. Step 6: Final answer
    x = 408,117.32

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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.