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Finding the Fourth Proportional to 325,351.44, 488,342.25 and 156,990.15

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Solution

The fourth proportional to 325,351.44, 488,342.25 and 156,990.15 is: 235,637.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,351.44 : 488,342.25 = 156,990.15 : x
  2. Step 2: Convert to fraction form
    325,351.44/488,342.25 = 156,990.15/x
  3. Step 3: Cross multiply
    325,351.44x = 488,342.25 × 156,990.15
  4. Step 4: Simplify right side
    325,351.44x = 76,664,923,078.84
  5. Step 5: Solve for x
    x = 76,664,923,078.84/325,351.44
  6. Step 6: Final answer
    x = 235,637.26

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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.