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Finding the Fourth Proportional to 79,236.60, 109,347.47 and 43,425.84

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Solution

The fourth proportional to 79,236.60, 109,347.47 and 43,425.84 is: 59,928.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,236.60 : 109,347.47 = 43,425.84 : x
  2. Step 2: Convert to fraction form
    79,236.60/109,347.47 = 43,425.84/x
  3. Step 3: Cross multiply
    79,236.60x = 109,347.47 × 43,425.84
  4. Step 4: Simplify right side
    79,236.60x = 4,748,505,736.62
  5. Step 5: Solve for x
    x = 4,748,505,736.62/79,236.60
  6. Step 6: Final answer
    x = 59,928.19

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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.