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Finding the Third Proportional to 1,765.13 and 4,209.75

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Solution

The third proportional to 1,765.13 and 4,209.75 is: 10,040.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.13 : 4,209.75 = 4,209.75 : x
  2. Step 2: Convert to fraction form
    1,765.13/4,209.75 = 4,209.75/x
  3. Step 3: Cross multiply
    1,765.13x = 4,209.75 × 4,209.75
  4. Step 4: Simplify right side
    1,765.13x = 17,721,995.06
  5. Step 5: Solve for x
    x = 17,721,995.06/1,765.13
  6. Step 6: Final answer
    x = 10,040.08

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Why These Related Problems?

These problems maintain the same ratio (2.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.