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Finding the Fourth Proportional to 76,958.73, 106,247.25 and 58,665.87

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Solution

The fourth proportional to 76,958.73, 106,247.25 and 58,665.87 is: 80,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,958.73 : 106,247.25 = 58,665.87 : x
  2. Step 2: Convert to fraction form
    76,958.73/106,247.25 = 58,665.87/x
  3. Step 3: Cross multiply
    76,958.73x = 106,247.25 × 58,665.87
  4. Step 4: Simplify right side
    76,958.73x = 6,233,087,356.36
  5. Step 5: Solve for x
    x = 6,233,087,356.36/76,958.73
  6. Step 6: Final answer
    x = 80,992.60

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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.