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Finding the Fourth Proportional to 68,620.97, 102,915.90 and 34,852.74

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Solution

The fourth proportional to 68,620.97, 102,915.90 and 34,852.74 is: 52,271.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,620.97 : 102,915.90 = 34,852.74 : x
  2. Step 2: Convert to fraction form
    68,620.97/102,915.90 = 34,852.74/x
  3. Step 3: Cross multiply
    68,620.97x = 102,915.90 × 34,852.74
  4. Step 4: Simplify right side
    68,620.97x = 3,586,901,104.57
  5. Step 5: Solve for x
    x = 3,586,901,104.57/68,620.97
  6. Step 6: Final answer
    x = 52,271.21

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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.