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Finding the Fourth Proportional to 325,464.52, 488,215.74 and 125,815.72

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Solution

The fourth proportional to 325,464.52, 488,215.74 and 125,815.72 is: 188,730.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,464.52 : 488,215.74 = 125,815.72 : x
  2. Step 2: Convert to fraction form
    325,464.52/488,215.74 = 125,815.72/x
  3. Step 3: Cross multiply
    325,464.52x = 488,215.74 × 125,815.72
  4. Step 4: Simplify right side
    325,464.52x = 61,425,214,843.43
  5. Step 5: Solve for x
    x = 61,425,214,843.43/325,464.52
  6. Step 6: Final answer
    x = 188,730.91

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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.