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Finding the Third Proportional to 3,090 and 8,043

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Solution

The third proportional to 3,090 and 8,043 is: 20,935.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090 : 8,043 = 8,043 : x
  2. Step 2: Convert to fraction form
    3,090/8,043 = 8,043/x
  3. Step 3: Cross multiply
    3,090x = 8,043 × 8,043
  4. Step 4: Simplify right side
    3,090x = 64,689,849
  5. Step 5: Solve for x
    x = 64,689,849/3,090
  6. Step 6: Final answer
    x = 20,935.23

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Why These Related Problems?

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