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Finding the Third Proportional to 1,845.28 and 3,929.77

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Solution

The third proportional to 1,845.28 and 3,929.77 is: 8,368.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,845.28 : 3,929.77 = 3,929.77 : x
  2. Step 2: Convert to fraction form
    1,845.28/3,929.77 = 3,929.77/x
  3. Step 3: Cross multiply
    1,845.28x = 3,929.77 × 3,929.77
  4. Step 4: Simplify right side
    1,845.28x = 15,443,057.87
  5. Step 5: Solve for x
    x = 15,443,057.87/1,845.28
  6. Step 6: Final answer
    x = 8,368.95

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.