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Finding the Third Proportional to 19,640 and 43,376

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Solution

The third proportional to 19,640 and 43,376 is: 95,798.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640 : 43,376 = 43,376 : x
  2. Step 2: Convert to fraction form
    19,640/43,376 = 43,376/x
  3. Step 3: Cross multiply
    19,640x = 43,376 × 43,376
  4. Step 4: Simplify right side
    19,640x = 1,881,477,376
  5. Step 5: Solve for x
    x = 1,881,477,376/19,640
  6. Step 6: Final answer
    x = 95,798.24

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.