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Finding the Third Proportional to 3,056 and 4,129

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Solution

The third proportional to 3,056 and 4,129 is: 5,578.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,056 : 4,129 = 4,129 : x
  2. Step 2: Convert to fraction form
    3,056/4,129 = 4,129/x
  3. Step 3: Cross multiply
    3,056x = 4,129 × 4,129
  4. Step 4: Simplify right side
    3,056x = 17,048,641
  5. Step 5: Solve for x
    x = 17,048,641/3,056
  6. Step 6: Final answer
    x = 5,578.74

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.