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Finding the Third Proportional to 4,386.50 and 6,945

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Solution

The third proportional to 4,386.50 and 6,945 is: 10,995.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,386.50 : 6,945 = 6,945 : x
  2. Step 2: Convert to fraction form
    4,386.50/6,945 = 6,945/x
  3. Step 3: Cross multiply
    4,386.50x = 6,945 × 6,945
  4. Step 4: Simplify right side
    4,386.50x = 48,233,025
  5. Step 5: Solve for x
    x = 48,233,025/4,386.50
  6. Step 6: Final answer
    x = 10,995.79

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.