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Finding the Fourth Proportional to 681,808.11, 940,877.91 and 375,877.44

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Solution

The fourth proportional to 681,808.11, 940,877.91 and 375,877.44 is: 518,701.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,808.11 : 940,877.91 = 375,877.44 : x
  2. Step 2: Convert to fraction form
    681,808.11/940,877.91 = 375,877.44/x
  3. Step 3: Cross multiply
    681,808.11x = 940,877.91 × 375,877.44
  4. Step 4: Simplify right side
    681,808.11x = 353,654,780,163.35
  5. Step 5: Solve for x
    x = 353,654,780,163.35/681,808.11
  6. Step 6: Final answer
    x = 518,701.34

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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.