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Finding the Third Proportional to 904.75 and 986.75

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Solution

The third proportional to 904.75 and 986.75 is: 1,076.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.75 : 986.75 = 986.75 : x
  2. Step 2: Convert to fraction form
    904.75/986.75 = 986.75/x
  3. Step 3: Cross multiply
    904.75x = 986.75 × 986.75
  4. Step 4: Simplify right side
    904.75x = 973,675.56
  5. Step 5: Solve for x
    x = 973,675.56/904.75
  6. Step 6: Final answer
    x = 1,076.18

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.