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Finding the Fourth Proportional to 79,668.66, 109,941.90 and 43,857.96

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Solution

The fourth proportional to 79,668.66, 109,941.90 and 43,857.96 is: 60,523.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,668.66 : 109,941.90 = 43,857.96 : x
  2. Step 2: Convert to fraction form
    79,668.66/109,941.90 = 43,857.96/x
  3. Step 3: Cross multiply
    79,668.66x = 109,941.90 × 43,857.96
  4. Step 4: Simplify right side
    79,668.66x = 4,821,827,452.52
  5. Step 5: Solve for x
    x = 4,821,827,452.52/79,668.66
  6. Step 6: Final answer
    x = 60,523.52

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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.