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Finding the Fourth Proportional to 79,199.43, 118,516.15 and 68,792.05

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Solution

The fourth proportional to 79,199.43, 118,516.15 and 68,792.05 is: 102,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,199.43 : 118,516.15 = 68,792.05 : x
  2. Step 2: Convert to fraction form
    79,199.43/118,516.15 = 68,792.05/x
  3. Step 3: Cross multiply
    79,199.43x = 118,516.15 × 68,792.05
  4. Step 4: Simplify right side
    79,199.43x = 8,152,968,916.61
  5. Step 5: Solve for x
    x = 8,152,968,916.61/79,199.43
  6. Step 6: Final answer
    x = 102,942.27

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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.