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Finding the Fourth Proportional to 325,585.20, 488,464.20 and 115,201.20

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Solution

The fourth proportional to 325,585.20, 488,464.20 and 115,201.20 is: 172,832.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,585.20 : 488,464.20 = 115,201.20 : x
  2. Step 2: Convert to fraction form
    325,585.20/488,464.20 = 115,201.20/x
  3. Step 3: Cross multiply
    325,585.20x = 488,464.20 × 115,201.20
  4. Step 4: Simplify right side
    325,585.20x = 56,271,661,997.04
  5. Step 5: Solve for x
    x = 56,271,661,997.04/325,585.20
  6. Step 6: Final answer
    x = 172,832.37

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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.