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Finding the Fourth Proportional to 61,229.80, 91,844.70 and 16,863.40

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Solution

The fourth proportional to 61,229.80, 91,844.70 and 16,863.40 is: 25,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,229.80 : 91,844.70 = 16,863.40 : x
  2. Step 2: Convert to fraction form
    61,229.80/91,844.70 = 16,863.40/x
  3. Step 3: Cross multiply
    61,229.80x = 91,844.70 × 16,863.40
  4. Step 4: Simplify right side
    61,229.80x = 1,548,813,913.98
  5. Step 5: Solve for x
    x = 1,548,813,913.98/61,229.80
  6. Step 6: Final answer
    x = 25,295.10

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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.