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Finding the Fourth Proportional to 325,046.92, 487,591.77 and 85,166.69

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Solution

The fourth proportional to 325,046.92, 487,591.77 and 85,166.69 is: 127,755.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,046.92 : 487,591.77 = 85,166.69 : x
  2. Step 2: Convert to fraction form
    325,046.92/487,591.77 = 85,166.69/x
  3. Step 3: Cross multiply
    325,046.92x = 487,591.77 × 85,166.69
  4. Step 4: Simplify right side
    325,046.92x = 41,526,578,341.12
  5. Step 5: Solve for x
    x = 41,526,578,341.12/325,046.92
  6. Step 6: Final answer
    x = 127,755.64

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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.