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Finding the Third Proportional to 334.69 and 720.70

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Solution

The third proportional to 334.69 and 720.70 is: 1,551.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.69 : 720.70 = 720.70 : x
  2. Step 2: Convert to fraction form
    334.69/720.70 = 720.70/x
  3. Step 3: Cross multiply
    334.69x = 720.70 × 720.70
  4. Step 4: Simplify right side
    334.69x = 519,412.99
  5. Step 5: Solve for x
    x = 519,412.99/334.69
  6. Step 6: Final answer
    x = 1,551.93

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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.