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Finding the Third Proportional to 405,256 and 938,174

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Solution

The third proportional to 405,256 and 938,174 is: 2,171,887.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,256 : 938,174 = 938,174 : x
  2. Step 2: Convert to fraction form
    405,256/938,174 = 938,174/x
  3. Step 3: Cross multiply
    405,256x = 938,174 × 938,174
  4. Step 4: Simplify right side
    405,256x = 880,170,454,276
  5. Step 5: Solve for x
    x = 880,170,454,276/405,256
  6. Step 6: Final answer
    x = 2,171,887.53

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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.