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Finding the Fourth Proportional to 79,569.86, 109,804.21 and 43,759.87

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Solution

The fourth proportional to 79,569.86, 109,804.21 and 43,759.87 is: 60,387.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,569.86 : 109,804.21 = 43,759.87 : x
  2. Step 2: Convert to fraction form
    79,569.86/109,804.21 = 43,759.87/x
  3. Step 3: Cross multiply
    79,569.86x = 109,804.21 × 43,759.87
  4. Step 4: Simplify right side
    79,569.86x = 4,805,017,187.23
  5. Step 5: Solve for x
    x = 4,805,017,187.23/79,569.86
  6. Step 6: Final answer
    x = 60,387.41

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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.