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Finding the Fourth Proportional to 325,843.16, 488,128.43 and 154,821.48

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Solution

The fourth proportional to 325,843.16, 488,128.43 and 154,821.48 is: 231,929.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,843.16 : 488,128.43 = 154,821.48 : x
  2. Step 2: Convert to fraction form
    325,843.16/488,128.43 = 154,821.48/x
  3. Step 3: Cross multiply
    325,843.16x = 488,128.43 × 154,821.48
  4. Step 4: Simplify right side
    325,843.16x = 75,572,763,648.38
  5. Step 5: Solve for x
    x = 75,572,763,648.38/325,843.16
  6. Step 6: Final answer
    x = 231,929.88

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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.