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Finding the Fourth Proportional to 68,391.88, 102,633.64 and 24,018.80

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Solution

The fourth proportional to 68,391.88, 102,633.64 and 24,018.80 is: 36,044.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,391.88 : 102,633.64 = 24,018.80 : x
  2. Step 2: Convert to fraction form
    68,391.88/102,633.64 = 24,018.80/x
  3. Step 3: Cross multiply
    68,391.88x = 102,633.64 × 24,018.80
  4. Step 4: Simplify right side
    68,391.88x = 2,465,136,872.43
  5. Step 5: Solve for x
    x = 2,465,136,872.43/68,391.88
  6. Step 6: Final answer
    x = 36,044.29

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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.