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Finding the Fourth Proportional to 68,765.75, 103,016.86 and 46,540.79

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Solution

The fourth proportional to 68,765.75, 103,016.86 and 46,540.79 is: 69,722.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,765.75 : 103,016.86 = 46,540.79 : x
  2. Step 2: Convert to fraction form
    68,765.75/103,016.86 = 46,540.79/x
  3. Step 3: Cross multiply
    68,765.75x = 103,016.86 × 46,540.79
  4. Step 4: Simplify right side
    68,765.75x = 4,794,485,416.28
  5. Step 5: Solve for x
    x = 4,794,485,416.28/68,765.75
  6. Step 6: Final answer
    x = 69,722.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.