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Finding the Third Proportional to 2,160 and 3,672

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Solution

The third proportional to 2,160 and 3,672 is: 6,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160 : 3,672 = 3,672 : x
  2. Step 2: Convert to fraction form
    2,160/3,672 = 3,672/x
  3. Step 3: Cross multiply
    2,160x = 3,672 × 3,672
  4. Step 4: Simplify right side
    2,160x = 13,483,584
  5. Step 5: Solve for x
    x = 13,483,584/2,160
  6. Step 6: Final answer
    x = 6,242.40

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.