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Finding the Fourth Proportional to 205,594.80, 308,392.20 and 72,625.20

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Solution

The fourth proportional to 205,594.80, 308,392.20 and 72,625.20 is: 108,937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,594.80 : 308,392.20 = 72,625.20 : x
  2. Step 2: Convert to fraction form
    205,594.80/308,392.20 = 72,625.20/x
  3. Step 3: Cross multiply
    205,594.80x = 308,392.20 × 72,625.20
  4. Step 4: Simplify right side
    205,594.80x = 22,397,045,203.44
  5. Step 5: Solve for x
    x = 22,397,045,203.44/205,594.80
  6. Step 6: Final answer
    x = 108,937.80

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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.