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Finding the Fourth Proportional to 77,161.10, 106,481.78 and 43,169.42

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Solution

The fourth proportional to 77,161.10, 106,481.78 and 43,169.42 is: 59,573.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,161.10 : 106,481.78 = 43,169.42 : x
  2. Step 2: Convert to fraction form
    77,161.10/106,481.78 = 43,169.42/x
  3. Step 3: Cross multiply
    77,161.10x = 106,481.78 × 43,169.42
  4. Step 4: Simplify right side
    77,161.10x = 4,596,756,683.17
  5. Step 5: Solve for x
    x = 4,596,756,683.17/77,161.10
  6. Step 6: Final answer
    x = 59,573.50

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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.