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Finding the Fourth Proportional to 66,606.66, 91,916.11 and 36,391.33

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Solution

The fourth proportional to 66,606.66, 91,916.11 and 36,391.33 is: 50,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,606.66 : 91,916.11 = 36,391.33 : x
  2. Step 2: Convert to fraction form
    66,606.66/91,916.11 = 36,391.33/x
  3. Step 3: Cross multiply
    66,606.66x = 91,916.11 × 36,391.33
  4. Step 4: Simplify right side
    66,606.66x = 3,344,949,491.33
  5. Step 5: Solve for x
    x = 3,344,949,491.33/66,606.66
  6. Step 6: Final answer
    x = 50,219.44

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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.