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Finding the Third Proportional to 714 and 1,074.38

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Solution

The third proportional to 714 and 1,074.38 is: 1,616.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    714 : 1,074.38 = 1,074.38 : x
  2. Step 2: Convert to fraction form
    714/1,074.38 = 1,074.38/x
  3. Step 3: Cross multiply
    714x = 1,074.38 × 1,074.38
  4. Step 4: Simplify right side
    714x = 1,154,281.64
  5. Step 5: Solve for x
    x = 1,154,281.64/714
  6. Step 6: Final answer
    x = 1,616.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.