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Finding the Third Proportional to 1,911.94 and 4,208.06

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Solution

The third proportional to 1,911.94 and 4,208.06 is: 9,261.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.94 : 4,208.06 = 4,208.06 : x
  2. Step 2: Convert to fraction form
    1,911.94/4,208.06 = 4,208.06/x
  3. Step 3: Cross multiply
    1,911.94x = 4,208.06 × 4,208.06
  4. Step 4: Simplify right side
    1,911.94x = 17,707,790.00
  5. Step 5: Solve for x
    x = 17,707,790.00/1,911.94
  6. Step 6: Final answer
    x = 9,261.70

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.