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Finding the Fourth Proportional to 68,553.98, 102,685.14 and 40,443.74

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Solution

The fourth proportional to 68,553.98, 102,685.14 and 40,443.74 is: 60,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,553.98 : 102,685.14 = 40,443.74 : x
  2. Step 2: Convert to fraction form
    68,553.98/102,685.14 = 40,443.74/x
  3. Step 3: Cross multiply
    68,553.98x = 102,685.14 × 40,443.74
  4. Step 4: Simplify right side
    68,553.98x = 4,152,971,104.02
  5. Step 5: Solve for x
    x = 4,152,971,104.02/68,553.98
  6. Step 6: Final answer
    x = 60,579.58

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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.