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Finding the Fourth Proportional to 59,578.81, 82,218.65 and 32,721.55

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Solution

The fourth proportional to 59,578.81, 82,218.65 and 32,721.55 is: 45,155.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,578.81 : 82,218.65 = 32,721.55 : x
  2. Step 2: Convert to fraction form
    59,578.81/82,218.65 = 32,721.55/x
  3. Step 3: Cross multiply
    59,578.81x = 82,218.65 × 32,721.55
  4. Step 4: Simplify right side
    59,578.81x = 2,690,321,297.75
  5. Step 5: Solve for x
    x = 2,690,321,297.75/59,578.81
  6. Step 6: Final answer
    x = 45,155.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.