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Finding the Third Proportional to 4,206.94 and 8,926.31

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Solution

The third proportional to 4,206.94 and 8,926.31 is: 18,939.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,206.94 : 8,926.31 = 8,926.31 : x
  2. Step 2: Convert to fraction form
    4,206.94/8,926.31 = 8,926.31/x
  3. Step 3: Cross multiply
    4,206.94x = 8,926.31 × 8,926.31
  4. Step 4: Simplify right side
    4,206.94x = 79,679,054.85
  5. Step 5: Solve for x
    x = 79,679,054.85/4,206.94
  6. Step 6: Final answer
    x = 18,939.92

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.