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Finding the Fourth Proportional to 79,668.60, 109,940.94 and 43,857.24

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Solution

The fourth proportional to 79,668.60, 109,940.94 and 43,857.24 is: 60,522.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,668.60 : 109,940.94 = 43,857.24 : x
  2. Step 2: Convert to fraction form
    79,668.60/109,940.94 = 43,857.24/x
  3. Step 3: Cross multiply
    79,668.60x = 109,940.94 × 43,857.24
  4. Step 4: Simplify right side
    79,668.60x = 4,821,706,191.41
  5. Step 5: Solve for x
    x = 4,821,706,191.41/79,668.60
  6. Step 6: Final answer
    x = 60,522.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.