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Finding the Third Proportional to 4,311 and 8,392.50

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Solution

The third proportional to 4,311 and 8,392.50 is: 16,338.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311 : 8,392.50 = 8,392.50 : x
  2. Step 2: Convert to fraction form
    4,311/8,392.50 = 8,392.50/x
  3. Step 3: Cross multiply
    4,311x = 8,392.50 × 8,392.50
  4. Step 4: Simplify right side
    4,311x = 70,434,056.25
  5. Step 5: Solve for x
    x = 70,434,056.25/4,311
  6. Step 6: Final answer
    x = 16,338.22

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.