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Finding the Fourth Proportional to 216,753.18, 324,709.11 and 159,723.60

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Solution

The fourth proportional to 216,753.18, 324,709.11 and 159,723.60 is: 239,275.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,753.18 : 324,709.11 = 159,723.60 : x
  2. Step 2: Convert to fraction form
    216,753.18/324,709.11 = 159,723.60/x
  3. Step 3: Cross multiply
    216,753.18x = 324,709.11 × 159,723.60
  4. Step 4: Simplify right side
    216,753.18x = 51,863,708,002.00
  5. Step 5: Solve for x
    x = 51,863,708,002.00/216,753.18
  6. Step 6: Final answer
    x = 239,275.42

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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.