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Finding the Third Proportional to 608.50 and 1,319

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Solution

The third proportional to 608.50 and 1,319 is: 2,859.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.50 : 1,319 = 1,319 : x
  2. Step 2: Convert to fraction form
    608.50/1,319 = 1,319/x
  3. Step 3: Cross multiply
    608.50x = 1,319 × 1,319
  4. Step 4: Simplify right side
    608.50x = 1,739,761
  5. Step 5: Solve for x
    x = 1,739,761/608.50
  6. Step 6: Final answer
    x = 2,859.10

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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.