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Finding the Fourth Proportional to 78,978.50, 108,990.17 and 44,986.97

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Solution

The fourth proportional to 78,978.50, 108,990.17 and 44,986.97 is: 62,081.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,978.50 : 108,990.17 = 44,986.97 : x
  2. Step 2: Convert to fraction form
    78,978.50/108,990.17 = 44,986.97/x
  3. Step 3: Cross multiply
    78,978.50x = 108,990.17 × 44,986.97
  4. Step 4: Simplify right side
    78,978.50x = 4,903,137,698.38
  5. Step 5: Solve for x
    x = 4,903,137,698.38/78,978.50
  6. Step 6: Final answer
    x = 62,081.93

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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.