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Finding the Fourth Proportional to 73,219.70, 109,704.15 and 39,963.10

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Solution

The fourth proportional to 73,219.70, 109,704.15 and 39,963.10 is: 59,876.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,219.70 : 109,704.15 = 39,963.10 : x
  2. Step 2: Convert to fraction form
    73,219.70/109,704.15 = 39,963.10/x
  3. Step 3: Cross multiply
    73,219.70x = 109,704.15 × 39,963.10
  4. Step 4: Simplify right side
    73,219.70x = 4,384,117,642.60
  5. Step 5: Solve for x
    x = 4,384,117,642.60/73,219.70
  6. Step 6: Final answer
    x = 59,876.21

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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.