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Finding the Third Proportional to 7,068.94 and 9,168.19

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Solution

The third proportional to 7,068.94 and 9,168.19 is: 11,890.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,068.94 : 9,168.19 = 9,168.19 : x
  2. Step 2: Convert to fraction form
    7,068.94/9,168.19 = 9,168.19/x
  3. Step 3: Cross multiply
    7,068.94x = 9,168.19 × 9,168.19
  4. Step 4: Simplify right side
    7,068.94x = 84,055,662.04
  5. Step 5: Solve for x
    x = 84,055,662.04/7,068.94
  6. Step 6: Final answer
    x = 11,890.85

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.