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Finding the Third Proportional to 1,922 and 4,989

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Solution

The third proportional to 1,922 and 4,989 is: 12,950.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922 : 4,989 = 4,989 : x
  2. Step 2: Convert to fraction form
    1,922/4,989 = 4,989/x
  3. Step 3: Cross multiply
    1,922x = 4,989 × 4,989
  4. Step 4: Simplify right side
    1,922x = 24,890,121
  5. Step 5: Solve for x
    x = 24,890,121/1,922
  6. Step 6: Final answer
    x = 12,950.11

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These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.