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Finding the Third Proportional to 5,242 and 12,160

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Solution

The third proportional to 5,242 and 12,160 is: 28,207.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,242 : 12,160 = 12,160 : x
  2. Step 2: Convert to fraction form
    5,242/12,160 = 12,160/x
  3. Step 3: Cross multiply
    5,242x = 12,160 × 12,160
  4. Step 4: Simplify right side
    5,242x = 147,865,600
  5. Step 5: Solve for x
    x = 147,865,600/5,242
  6. Step 6: Final answer
    x = 28,207.86

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.