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Finding the Third Proportional to 4,386.94 and 5,691.75

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Solution

The third proportional to 4,386.94 and 5,691.75 is: 7,384.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,386.94 : 5,691.75 = 5,691.75 : x
  2. Step 2: Convert to fraction form
    4,386.94/5,691.75 = 5,691.75/x
  3. Step 3: Cross multiply
    4,386.94x = 5,691.75 × 5,691.75
  4. Step 4: Simplify right side
    4,386.94x = 32,396,018.06
  5. Step 5: Solve for x
    x = 32,396,018.06/4,386.94
  6. Step 6: Final answer
    x = 7,384.65

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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.