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Finding the Third Proportional to 761 and 1,764

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Solution

The third proportional to 761 and 1,764 is: 4,088.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    761 : 1,764 = 1,764 : x
  2. Step 2: Convert to fraction form
    761/1,764 = 1,764/x
  3. Step 3: Cross multiply
    761x = 1,764 × 1,764
  4. Step 4: Simplify right side
    761x = 3,111,696
  5. Step 5: Solve for x
    x = 3,111,696/761
  6. Step 6: Final answer
    x = 4,088.96

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.