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Finding the Third Proportional to 722.25 and 1,068.75

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Solution

The third proportional to 722.25 and 1,068.75 is: 1,581.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.25 : 1,068.75 = 1,068.75 : x
  2. Step 2: Convert to fraction form
    722.25/1,068.75 = 1,068.75/x
  3. Step 3: Cross multiply
    722.25x = 1,068.75 × 1,068.75
  4. Step 4: Simplify right side
    722.25x = 1,142,226.56
  5. Step 5: Solve for x
    x = 1,142,226.56/722.25
  6. Step 6: Final answer
    x = 1,581.48

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.