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Finding the Fourth Proportional to 217,570.26, 326,363.60 and 67,809.97

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Solution

The fourth proportional to 217,570.26, 326,363.60 and 67,809.97 is: 101,717.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,570.26 : 326,363.60 = 67,809.97 : x
  2. Step 2: Convert to fraction form
    217,570.26/326,363.60 = 67,809.97/x
  3. Step 3: Cross multiply
    217,570.26x = 326,363.60 × 67,809.97
  4. Step 4: Simplify right side
    217,570.26x = 22,130,705,278.71
  5. Step 5: Solve for x
    x = 22,130,705,278.71/217,570.26
  6. Step 6: Final answer
    x = 101,717.51

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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.