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Finding the Fourth Proportional to 248,361.72, 372,317.92 and 90,553.24

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Solution

The fourth proportional to 248,361.72, 372,317.92 and 90,553.24 is: 135,747.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,361.72 : 372,317.92 = 90,553.24 : x
  2. Step 2: Convert to fraction form
    248,361.72/372,317.92 = 90,553.24/x
  3. Step 3: Cross multiply
    248,361.72x = 372,317.92 × 90,553.24
  4. Step 4: Simplify right side
    248,361.72x = 33,714,593,966.06
  5. Step 5: Solve for x
    x = 33,714,593,966.06/248,361.72
  6. Step 6: Final answer
    x = 135,747.95

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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.