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Finding the Third Proportional to 3,116.81 and 6,539.06

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Solution

The third proportional to 3,116.81 and 6,539.06 is: 13,718.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.81 : 6,539.06 = 6,539.06 : x
  2. Step 2: Convert to fraction form
    3,116.81/6,539.06 = 6,539.06/x
  3. Step 3: Cross multiply
    3,116.81x = 6,539.06 × 6,539.06
  4. Step 4: Simplify right side
    3,116.81x = 42,759,338.38
  5. Step 5: Solve for x
    x = 42,759,338.38/3,116.81
  6. Step 6: Final answer
    x = 13,718.93

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.