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Finding the Fourth Proportional to 73,161.72, 109,628.10 and 56,562.66

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Solution

The fourth proportional to 73,161.72, 109,628.10 and 56,562.66 is: 84,755.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,161.72 : 109,628.10 = 56,562.66 : x
  2. Step 2: Convert to fraction form
    73,161.72/109,628.10 = 56,562.66/x
  3. Step 3: Cross multiply
    73,161.72x = 109,628.10 × 56,562.66
  4. Step 4: Simplify right side
    73,161.72x = 6,200,856,946.75
  5. Step 5: Solve for x
    x = 6,200,856,946.75/73,161.72
  6. Step 6: Final answer
    x = 84,755.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.