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Finding the Third Proportional to 788 and 1,711

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Solution

The third proportional to 788 and 1,711 is: 3,715.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    788 : 1,711 = 1,711 : x
  2. Step 2: Convert to fraction form
    788/1,711 = 1,711/x
  3. Step 3: Cross multiply
    788x = 1,711 × 1,711
  4. Step 4: Simplify right side
    788x = 2,927,521
  5. Step 5: Solve for x
    x = 2,927,521/788
  6. Step 6: Final answer
    x = 3,715.13

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.