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Finding the Fourth Proportional to 78,236.52, 107,972.36 and 44,245.68

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Solution

The fourth proportional to 78,236.52, 107,972.36 and 44,245.68 is: 61,062.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,236.52 : 107,972.36 = 44,245.68 : x
  2. Step 2: Convert to fraction form
    78,236.52/107,972.36 = 44,245.68/x
  3. Step 3: Cross multiply
    78,236.52x = 107,972.36 × 44,245.68
  4. Step 4: Simplify right side
    78,236.52x = 4,777,310,538.11
  5. Step 5: Solve for x
    x = 4,777,310,538.11/78,236.52
  6. Step 6: Final answer
    x = 61,062.41

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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.