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Finding the Third Proportional to 56,921 and 124,913

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Solution

The third proportional to 56,921 and 124,913 is: 274,121.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,921 : 124,913 = 124,913 : x
  2. Step 2: Convert to fraction form
    56,921/124,913 = 124,913/x
  3. Step 3: Cross multiply
    56,921x = 124,913 × 124,913
  4. Step 4: Simplify right side
    56,921x = 15,603,257,569
  5. Step 5: Solve for x
    x = 15,603,257,569/56,921
  6. Step 6: Final answer
    x = 274,121.28

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.