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Finding the Third Proportional to 57,644 and 84,388

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Solution

The third proportional to 57,644 and 84,388 is: 123,539.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,644 : 84,388 = 84,388 : x
  2. Step 2: Convert to fraction form
    57,644/84,388 = 84,388/x
  3. Step 3: Cross multiply
    57,644x = 84,388 × 84,388
  4. Step 4: Simplify right side
    57,644x = 7,121,334,544
  5. Step 5: Solve for x
    x = 7,121,334,544/57,644
  6. Step 6: Final answer
    x = 123,539.91

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.