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Finding the Fourth Proportional to 248,418.22, 372,633.46 and 90,646.64

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Solution

The fourth proportional to 248,418.22, 372,633.46 and 90,646.64 is: 135,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,418.22 : 372,633.46 = 90,646.64 : x
  2. Step 2: Convert to fraction form
    248,418.22/372,633.46 = 90,646.64/x
  3. Step 3: Cross multiply
    248,418.22x = 372,633.46 × 90,646.64
  4. Step 4: Simplify right side
    248,418.22x = 33,777,971,100.57
  5. Step 5: Solve for x
    x = 33,777,971,100.57/248,418.22
  6. Step 6: Final answer
    x = 135,972.20

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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.