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Finding the Third Proportional to 2,989.13 and 4,659.75

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Solution

The third proportional to 2,989.13 and 4,659.75 is: 7,264.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.13 : 4,659.75 = 4,659.75 : x
  2. Step 2: Convert to fraction form
    2,989.13/4,659.75 = 4,659.75/x
  3. Step 3: Cross multiply
    2,989.13x = 4,659.75 × 4,659.75
  4. Step 4: Simplify right side
    2,989.13x = 21,713,270.06
  5. Step 5: Solve for x
    x = 21,713,270.06/2,989.13
  6. Step 6: Final answer
    x = 7,264.09

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.