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Finding the Fourth Proportional to 75,780.86, 104,578.07 and 41,790.62

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Solution

The fourth proportional to 75,780.86, 104,578.07 and 41,790.62 is: 57,671.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,780.86 : 104,578.07 = 41,790.62 : x
  2. Step 2: Convert to fraction form
    75,780.86/104,578.07 = 41,790.62/x
  3. Step 3: Cross multiply
    75,780.86x = 104,578.07 × 41,790.62
  4. Step 4: Simplify right side
    75,780.86x = 4,370,381,651.86
  5. Step 5: Solve for x
    x = 4,370,381,651.86/75,780.86
  6. Step 6: Final answer
    x = 57,671.32

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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.