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Finding the Fourth Proportional to 71,338.66, 106,916.38 and 26,912.48

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Solution

The fourth proportional to 71,338.66, 106,916.38 and 26,912.48 is: 40,334.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,338.66 : 106,916.38 = 26,912.48 : x
  2. Step 2: Convert to fraction form
    71,338.66/106,916.38 = 26,912.48/x
  3. Step 3: Cross multiply
    71,338.66x = 106,916.38 × 26,912.48
  4. Step 4: Simplify right side
    71,338.66x = 2,877,384,336.56
  5. Step 5: Solve for x
    x = 2,877,384,336.56/71,338.66
  6. Step 6: Final answer
    x = 40,334.15

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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.