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Finding the Third Proportional to 3,656.81 and 4,001.06

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Solution

The third proportional to 3,656.81 and 4,001.06 is: 4,377.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,656.81 : 4,001.06 = 4,001.06 : x
  2. Step 2: Convert to fraction form
    3,656.81/4,001.06 = 4,001.06/x
  3. Step 3: Cross multiply
    3,656.81x = 4,001.06 × 4,001.06
  4. Step 4: Simplify right side
    3,656.81x = 16,008,501.13
  5. Step 5: Solve for x
    x = 16,008,501.13/3,656.81
  6. Step 6: Final answer
    x = 4,377.72

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.