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Finding the Third Proportional to 716.50 and 1,562

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Solution

The third proportional to 716.50 and 1,562 is: 3,405.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.50 : 1,562 = 1,562 : x
  2. Step 2: Convert to fraction form
    716.50/1,562 = 1,562/x
  3. Step 3: Cross multiply
    716.50x = 1,562 × 1,562
  4. Step 4: Simplify right side
    716.50x = 2,439,844
  5. Step 5: Solve for x
    x = 2,439,844/716.50
  6. Step 6: Final answer
    x = 3,405.23

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.