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Finding the Fourth Proportional to 325,390.60, 488,165.90 and 112,161.80

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Solution

The fourth proportional to 325,390.60, 488,165.90 and 112,161.80 is: 168,270.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,390.60 : 488,165.90 = 112,161.80 : x
  2. Step 2: Convert to fraction form
    325,390.60/488,165.90 = 112,161.80/x
  3. Step 3: Cross multiply
    325,390.60x = 488,165.90 × 112,161.80
  4. Step 4: Simplify right side
    325,390.60x = 54,753,566,042.62
  5. Step 5: Solve for x
    x = 54,753,566,042.62/325,390.60
  6. Step 6: Final answer
    x = 168,270.28

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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.