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Finding the Third Proportional to 1,866.16 and 3,946.85

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Solution

The third proportional to 1,866.16 and 3,946.85 is: 8,347.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.16 : 3,946.85 = 3,946.85 : x
  2. Step 2: Convert to fraction form
    1,866.16/3,946.85 = 3,946.85/x
  3. Step 3: Cross multiply
    1,866.16x = 3,946.85 × 3,946.85
  4. Step 4: Simplify right side
    1,866.16x = 15,577,637.26
  5. Step 5: Solve for x
    x = 15,577,637.26/1,866.16
  6. Step 6: Final answer
    x = 8,347.41

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.