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Finding the Fourth Proportional to 217,805.34, 326,773.61 and 68,039.58

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Solution

The fourth proportional to 217,805.34, 326,773.61 and 68,039.58 is: 102,079.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,805.34 : 326,773.61 = 68,039.58 : x
  2. Step 2: Convert to fraction form
    217,805.34/326,773.61 = 68,039.58/x
  3. Step 3: Cross multiply
    217,805.34x = 326,773.61 × 68,039.58
  4. Step 4: Simplify right side
    217,805.34x = 22,233,537,715.71
  5. Step 5: Solve for x
    x = 22,233,537,715.71/217,805.34
  6. Step 6: Final answer
    x = 102,079.86

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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.