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Finding the Fourth Proportional to 79,529.68, 109,750.92 and 43,722

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Solution

The fourth proportional to 79,529.68, 109,750.92 and 43,722 is: 60,336.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,529.68 : 109,750.92 = 43,722 : x
  2. Step 2: Convert to fraction form
    79,529.68/109,750.92 = 43,722/x
  3. Step 3: Cross multiply
    79,529.68x = 109,750.92 × 43,722
  4. Step 4: Simplify right side
    79,529.68x = 4,798,529,724.24
  5. Step 5: Solve for x
    x = 4,798,529,724.24/79,529.68
  6. Step 6: Final answer
    x = 60,336.34

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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.