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Finding the Third Proportional to 852.75 and 1,035

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Solution

The third proportional to 852.75 and 1,035 is: 1,256.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.75 : 1,035 = 1,035 : x
  2. Step 2: Convert to fraction form
    852.75/1,035 = 1,035/x
  3. Step 3: Cross multiply
    852.75x = 1,035 × 1,035
  4. Step 4: Simplify right side
    852.75x = 1,071,225
  5. Step 5: Solve for x
    x = 1,071,225/852.75
  6. Step 6: Final answer
    x = 1,256.20

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.