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Finding the Fourth Proportional to 68,957.67, 103,436.49 and 22,210.55

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Solution

The fourth proportional to 68,957.67, 103,436.49 and 22,210.55 is: 33,315.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,957.67 : 103,436.49 = 22,210.55 : x
  2. Step 2: Convert to fraction form
    68,957.67/103,436.49 = 22,210.55/x
  3. Step 3: Cross multiply
    68,957.67x = 103,436.49 × 22,210.55
  4. Step 4: Simplify right side
    68,957.67x = 2,297,380,815.79
  5. Step 5: Solve for x
    x = 2,297,380,815.79/68,957.67
  6. Step 6: Final answer
    x = 33,315.81

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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.