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Finding the Fourth Proportional to 204,987.20, 307,480.80 and 169,995.20

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Solution

The fourth proportional to 204,987.20, 307,480.80 and 169,995.20 is: 254,992.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,987.20 : 307,480.80 = 169,995.20 : x
  2. Step 2: Convert to fraction form
    204,987.20/307,480.80 = 169,995.20/x
  3. Step 3: Cross multiply
    204,987.20x = 307,480.80 × 169,995.20
  4. Step 4: Simplify right side
    204,987.20x = 52,270,260,092.16
  5. Step 5: Solve for x
    x = 52,270,260,092.16/204,987.20
  6. Step 6: Final answer
    x = 254,992.80

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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.