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Finding the Fourth Proportional to 68,806.80, 103,220.43 and 24,429.84

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Solution

The fourth proportional to 68,806.80, 103,220.43 and 24,429.84 is: 36,648.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,806.80 : 103,220.43 = 24,429.84 : x
  2. Step 2: Convert to fraction form
    68,806.80/103,220.43 = 24,429.84/x
  3. Step 3: Cross multiply
    68,806.80x = 103,220.43 × 24,429.84
  4. Step 4: Simplify right side
    68,806.80x = 2,521,658,589.63
  5. Step 5: Solve for x
    x = 2,521,658,589.63/68,806.80
  6. Step 6: Final answer
    x = 36,648.39

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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.