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Finding the Third Proportional to 28,684 and 61,900

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Solution

The third proportional to 28,684 and 61,900 is: 133,580.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,684 : 61,900 = 61,900 : x
  2. Step 2: Convert to fraction form
    28,684/61,900 = 61,900/x
  3. Step 3: Cross multiply
    28,684x = 61,900 × 61,900
  4. Step 4: Simplify right side
    28,684x = 3,831,610,000
  5. Step 5: Solve for x
    x = 3,831,610,000/28,684
  6. Step 6: Final answer
    x = 133,580.04

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.