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Finding the Third Proportional to 5,115 and 5,583

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Solution

The third proportional to 5,115 and 5,583 is: 6,093.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115 : 5,583 = 5,583 : x
  2. Step 2: Convert to fraction form
    5,115/5,583 = 5,583/x
  3. Step 3: Cross multiply
    5,115x = 5,583 × 5,583
  4. Step 4: Simplify right side
    5,115x = 31,169,889
  5. Step 5: Solve for x
    x = 31,169,889/5,115
  6. Step 6: Final answer
    x = 6,093.82

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.