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Finding the Third Proportional to 4,993.88 and 7,890.75

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Solution

The third proportional to 4,993.88 and 7,890.75 is: 12,468.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,993.88 : 7,890.75 = 7,890.75 : x
  2. Step 2: Convert to fraction form
    4,993.88/7,890.75 = 7,890.75/x
  3. Step 3: Cross multiply
    4,993.88x = 7,890.75 × 7,890.75
  4. Step 4: Simplify right side
    4,993.88x = 62,263,935.56
  5. Step 5: Solve for x
    x = 62,263,935.56/4,993.88
  6. Step 6: Final answer
    x = 12,468.06

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.