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Finding the Third Proportional to 4,942.13 and 7,143.75

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Solution

The third proportional to 4,942.13 and 7,143.75 is: 10,326.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,942.13 : 7,143.75 = 7,143.75 : x
  2. Step 2: Convert to fraction form
    4,942.13/7,143.75 = 7,143.75/x
  3. Step 3: Cross multiply
    4,942.13x = 7,143.75 × 7,143.75
  4. Step 4: Simplify right side
    4,942.13x = 51,033,164.06
  5. Step 5: Solve for x
    x = 51,033,164.06/4,942.13
  6. Step 6: Final answer
    x = 10,326.16

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.