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Finding the Fourth Proportional to 62,782.74, 86,640.17 and 34,488.41

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Solution

The fourth proportional to 62,782.74, 86,640.17 and 34,488.41 is: 47,593.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,782.74 : 86,640.17 = 34,488.41 : x
  2. Step 2: Convert to fraction form
    62,782.74/86,640.17 = 34,488.41/x
  3. Step 3: Cross multiply
    62,782.74x = 86,640.17 × 34,488.41
  4. Step 4: Simplify right side
    62,782.74x = 2,988,081,099.79
  5. Step 5: Solve for x
    x = 2,988,081,099.79/62,782.74
  6. Step 6: Final answer
    x = 47,593.99

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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.