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Finding the Third Proportional to 822 and 922.50

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Solution

The third proportional to 822 and 922.50 is: 1,035.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    822 : 922.50 = 922.50 : x
  2. Step 2: Convert to fraction form
    822/922.50 = 922.50/x
  3. Step 3: Cross multiply
    822x = 922.50 × 922.50
  4. Step 4: Simplify right side
    822x = 851,006.25
  5. Step 5: Solve for x
    x = 851,006.25/822
  6. Step 6: Final answer
    x = 1,035.29

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Why These Related Problems?

These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.