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Finding the Fourth Proportional to 79,472.48, 109,783.96 and 75,273.44

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Solution

The fourth proportional to 79,472.48, 109,783.96 and 75,273.44 is: 103,983.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,472.48 : 109,783.96 = 75,273.44 : x
  2. Step 2: Convert to fraction form
    79,472.48/109,783.96 = 75,273.44/x
  3. Step 3: Cross multiply
    79,472.48x = 109,783.96 × 75,273.44
  4. Step 4: Simplify right side
    79,472.48x = 8,263,815,588.92
  5. Step 5: Solve for x
    x = 8,263,815,588.92/79,472.48
  6. Step 6: Final answer
    x = 103,983.37

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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.