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Finding the Third Proportional to 813.50 and 1,262

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Solution

The third proportional to 813.50 and 1,262 is: 1,957.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    813.50 : 1,262 = 1,262 : x
  2. Step 2: Convert to fraction form
    813.50/1,262 = 1,262/x
  3. Step 3: Cross multiply
    813.50x = 1,262 × 1,262
  4. Step 4: Simplify right side
    813.50x = 1,592,644
  5. Step 5: Solve for x
    x = 1,592,644/813.50
  6. Step 6: Final answer
    x = 1,957.77

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.