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Finding the Fourth Proportional to 217,143.87, 325,635.75 and 74,952.96

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Solution

The fourth proportional to 217,143.87, 325,635.75 and 74,952.96 is: 112,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,143.87 : 325,635.75 = 74,952.96 : x
  2. Step 2: Convert to fraction form
    217,143.87/325,635.75 = 74,952.96/x
  3. Step 3: Cross multiply
    217,143.87x = 325,635.75 × 74,952.96
  4. Step 4: Simplify right side
    217,143.87x = 24,407,363,344.32
  5. Step 5: Solve for x
    x = 24,407,363,344.32/217,143.87
  6. Step 6: Final answer
    x = 112,401.81

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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.