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Finding the Fourth Proportional to 216,916.05, 325,297.87 and 65,067.85

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Solution

The fourth proportional to 216,916.05, 325,297.87 and 65,067.85 is: 97,578.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,916.05 : 325,297.87 = 65,067.85 : x
  2. Step 2: Convert to fraction form
    216,916.05/325,297.87 = 65,067.85/x
  3. Step 3: Cross multiply
    216,916.05x = 325,297.87 × 65,067.85
  4. Step 4: Simplify right side
    216,916.05x = 21,166,432,685.14
  5. Step 5: Solve for x
    x = 21,166,432,685.14/216,916.05
  6. Step 6: Final answer
    x = 97,578.92

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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.