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Finding the Fourth Proportional to 79,235.25, 109,344.66 and 43,426.68

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Solution

The fourth proportional to 79,235.25, 109,344.66 and 43,426.68 is: 59,928.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,235.25 : 109,344.66 = 43,426.68 : x
  2. Step 2: Convert to fraction form
    79,235.25/109,344.66 = 43,426.68/x
  3. Step 3: Cross multiply
    79,235.25x = 109,344.66 × 43,426.68
  4. Step 4: Simplify right side
    79,235.25x = 4,748,475,559.53
  5. Step 5: Solve for x
    x = 4,748,475,559.53/79,235.25
  6. Step 6: Final answer
    x = 59,928.83

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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.