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Finding the Third Proportional to 669.38 and 1,470.94

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Solution

The third proportional to 669.38 and 1,470.94 is: 3,232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.38 : 1,470.94 = 1,470.94 : x
  2. Step 2: Convert to fraction form
    669.38/1,470.94 = 1,470.94/x
  3. Step 3: Cross multiply
    669.38x = 1,470.94 × 1,470.94
  4. Step 4: Simplify right side
    669.38x = 2,163,657.13
  5. Step 5: Solve for x
    x = 2,163,657.13/669.38
  6. Step 6: Final answer
    x = 3,232.35

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.