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Finding the Fourth Proportional to 248,390.64, 372,361.26 and 90,582.12

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Solution

The fourth proportional to 248,390.64, 372,361.26 and 90,582.12 is: 135,791.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,390.64 : 372,361.26 = 90,582.12 : x
  2. Step 2: Convert to fraction form
    248,390.64/372,361.26 = 90,582.12/x
  3. Step 3: Cross multiply
    248,390.64x = 372,361.26 × 90,582.12
  4. Step 4: Simplify right side
    248,390.64x = 33,729,272,336.67
  5. Step 5: Solve for x
    x = 33,729,272,336.67/248,390.64
  6. Step 6: Final answer
    x = 135,791.24

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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.