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Finding the Fourth Proportional to 90,892.98, 125,428.64 and 50,605.61

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Solution

The fourth proportional to 90,892.98, 125,428.64 and 50,605.61 is: 69,833.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,892.98 : 125,428.64 = 50,605.61 : x
  2. Step 2: Convert to fraction form
    90,892.98/125,428.64 = 50,605.61/x
  3. Step 3: Cross multiply
    90,892.98x = 125,428.64 × 50,605.61
  4. Step 4: Simplify right side
    90,892.98x = 6,347,391,958.50
  5. Step 5: Solve for x
    x = 6,347,391,958.50/90,892.98
  6. Step 6: Final answer
    x = 69,833.69

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