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Finding the Fourth Proportional to 323,591.40, 485,605.77 and 113,231.16

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Solution

The fourth proportional to 323,591.40, 485,605.77 and 113,231.16 is: 169,923.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,591.40 : 485,605.77 = 113,231.16 : x
  2. Step 2: Convert to fraction form
    323,591.40/485,605.77 = 113,231.16/x
  3. Step 3: Cross multiply
    323,591.40x = 485,605.77 × 113,231.16
  4. Step 4: Simplify right side
    323,591.40x = 54,985,704,639.79
  5. Step 5: Solve for x
    x = 54,985,704,639.79/323,591.40
  6. Step 6: Final answer
    x = 169,923.26

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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.