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Finding the Fourth Proportional to 217,568.64, 326,297.60 and 67,781.01

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Solution

The fourth proportional to 217,568.64, 326,297.60 and 67,781.01 is: 101,654.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,568.64 : 326,297.60 = 67,781.01 : x
  2. Step 2: Convert to fraction form
    217,568.64/326,297.60 = 67,781.01/x
  3. Step 3: Cross multiply
    217,568.64x = 326,297.60 × 67,781.01
  4. Step 4: Simplify right side
    217,568.64x = 22,116,780,888.58
  5. Step 5: Solve for x
    x = 22,116,780,888.58/217,568.64
  6. Step 6: Final answer
    x = 101,654.27

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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.