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Finding the Fourth Proportional to 681,805.11, 940,873.76 and 375,874.43

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Solution

The fourth proportional to 681,805.11, 940,873.76 and 375,874.43 is: 518,697.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,805.11 : 940,873.76 = 375,874.43 : x
  2. Step 2: Convert to fraction form
    681,805.11/940,873.76 = 375,874.43/x
  3. Step 3: Cross multiply
    681,805.11x = 940,873.76 × 375,874.43
  4. Step 4: Simplify right side
    681,805.11x = 353,650,383,067.75
  5. Step 5: Solve for x
    x = 353,650,383,067.75/681,805.11
  6. Step 6: Final answer
    x = 518,697.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.