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Finding the Third Proportional to 1,471.13 and 3,155.63

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Solution

The third proportional to 1,471.13 and 3,155.63 is: 6,768.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.13 : 3,155.63 = 3,155.63 : x
  2. Step 2: Convert to fraction form
    1,471.13/3,155.63 = 3,155.63/x
  3. Step 3: Cross multiply
    1,471.13x = 3,155.63 × 3,155.63
  4. Step 4: Simplify right side
    1,471.13x = 9,957,969.14
  5. Step 5: Solve for x
    x = 9,957,969.14/1,471.13
  6. Step 6: Final answer
    x = 6,768.95

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.