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Finding the Fourth Proportional to 248,416.22, 372,630.46 and 90,644.64

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Solution

The fourth proportional to 248,416.22, 372,630.46 and 90,644.64 is: 135,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,416.22 : 372,630.46 = 90,644.64 : x
  2. Step 2: Convert to fraction form
    248,416.22/372,630.46 = 90,644.64/x
  3. Step 3: Cross multiply
    248,416.22x = 372,630.46 × 90,644.64
  4. Step 4: Simplify right side
    248,416.22x = 33,776,953,899.73
  5. Step 5: Solve for x
    x = 33,776,953,899.73/248,416.22
  6. Step 6: Final answer
    x = 135,969.20

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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.