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Finding the Third Proportional to 2,113 and 4,043

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Solution

The third proportional to 2,113 and 4,043 is: 7,735.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113 : 4,043 = 4,043 : x
  2. Step 2: Convert to fraction form
    2,113/4,043 = 4,043/x
  3. Step 3: Cross multiply
    2,113x = 4,043 × 4,043
  4. Step 4: Simplify right side
    2,113x = 16,345,849
  5. Step 5: Solve for x
    x = 16,345,849/2,113
  6. Step 6: Final answer
    x = 7,735.85

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.