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Finding the Third Proportional to 55,972 and 122,120

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Solution

The third proportional to 55,972 and 122,120 is: 266,442.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,972 : 122,120 = 122,120 : x
  2. Step 2: Convert to fraction form
    55,972/122,120 = 122,120/x
  3. Step 3: Cross multiply
    55,972x = 122,120 × 122,120
  4. Step 4: Simplify right side
    55,972x = 14,913,294,400
  5. Step 5: Solve for x
    x = 14,913,294,400/55,972
  6. Step 6: Final answer
    x = 266,442.05

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.