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Finding the Fourth Proportional to 79,468.86, 109,668.96 and 43,661.19

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Solution

The fourth proportional to 79,468.86, 109,668.96 and 43,661.19 is: 60,253.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,468.86 : 109,668.96 = 43,661.19 : x
  2. Step 2: Convert to fraction form
    79,468.86/109,668.96 = 43,661.19/x
  3. Step 3: Cross multiply
    79,468.86x = 109,668.96 × 43,661.19
  4. Step 4: Simplify right side
    79,468.86x = 4,788,277,299.66
  5. Step 5: Solve for x
    x = 4,788,277,299.66/79,468.86
  6. Step 6: Final answer
    x = 60,253.50

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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.