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Finding the Fourth Proportional to 62,872.78, 86,762.42 and 34,578.26

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Solution

The fourth proportional to 62,872.78, 86,762.42 and 34,578.26 is: 47,716.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,872.78 : 86,762.42 = 34,578.26 : x
  2. Step 2: Convert to fraction form
    62,872.78/86,762.42 = 34,578.26/x
  3. Step 3: Cross multiply
    62,872.78x = 86,762.42 × 34,578.26
  4. Step 4: Simplify right side
    62,872.78x = 3,000,093,516.99
  5. Step 5: Solve for x
    x = 3,000,093,516.99/62,872.78
  6. Step 6: Final answer
    x = 47,716.89

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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.