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Finding the Third Proportional to 723.50 and 1,236

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Solution

The third proportional to 723.50 and 1,236 is: 2,111.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.50 : 1,236 = 1,236 : x
  2. Step 2: Convert to fraction form
    723.50/1,236 = 1,236/x
  3. Step 3: Cross multiply
    723.50x = 1,236 × 1,236
  4. Step 4: Simplify right side
    723.50x = 1,527,696
  5. Step 5: Solve for x
    x = 1,527,696/723.50
  6. Step 6: Final answer
    x = 2,111.54

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Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.