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Finding the Fourth Proportional to 325,643.60, 488,076.60 and 167,790.80

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Solution

The fourth proportional to 325,643.60, 488,076.60 and 167,790.80 is: 251,485.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,643.60 : 488,076.60 = 167,790.80 : x
  2. Step 2: Convert to fraction form
    325,643.60/488,076.60 = 167,790.80/x
  3. Step 3: Cross multiply
    325,643.60x = 488,076.60 × 167,790.80
  4. Step 4: Simplify right side
    325,643.60x = 81,894,763,175.28
  5. Step 5: Solve for x
    x = 81,894,763,175.28/325,643.60
  6. Step 6: Final answer
    x = 251,485.87

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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.