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Finding the Fourth Proportional to 68,706.83, 94,821.54 and 38,491.96

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Solution

The fourth proportional to 68,706.83, 94,821.54 and 38,491.96 is: 53,122.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,706.83 : 94,821.54 = 38,491.96 : x
  2. Step 2: Convert to fraction form
    68,706.83/94,821.54 = 38,491.96/x
  3. Step 3: Cross multiply
    68,706.83x = 94,821.54 × 38,491.96
  4. Step 4: Simplify right side
    68,706.83x = 3,649,866,721.21
  5. Step 5: Solve for x
    x = 3,649,866,721.21/68,706.83
  6. Step 6: Final answer
    x = 53,122.33

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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.