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Finding the Fourth Proportional to 73,963.31, 110,945.12 and 21,377.03

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Solution

The fourth proportional to 73,963.31, 110,945.12 and 21,377.03 is: 32,065.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,963.31 : 110,945.12 = 21,377.03 : x
  2. Step 2: Convert to fraction form
    73,963.31/110,945.12 = 21,377.03/x
  3. Step 3: Cross multiply
    73,963.31x = 110,945.12 × 21,377.03
  4. Step 4: Simplify right side
    73,963.31x = 2,371,676,496.98
  5. Step 5: Solve for x
    x = 2,371,676,496.98/73,963.31
  6. Step 6: Final answer
    x = 32,065.58

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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.