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Finding the Fourth Proportional to 70,447.08, 105,676.77 and 17,856.56

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Solution

The fourth proportional to 70,447.08, 105,676.77 and 17,856.56 is: 26,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,447.08 : 105,676.77 = 17,856.56 : x
  2. Step 2: Convert to fraction form
    70,447.08/105,676.77 = 17,856.56/x
  3. Step 3: Cross multiply
    70,447.08x = 105,676.77 × 17,856.56
  4. Step 4: Simplify right side
    70,447.08x = 1,887,023,915.27
  5. Step 5: Solve for x
    x = 1,887,023,915.27/70,447.08
  6. Step 6: Final answer
    x = 26,786.40

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