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Finding the Fourth Proportional to 7,836.71, 10,813.55 and 4,478.99

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Solution

The fourth proportional to 7,836.71, 10,813.55 and 4,478.99 is: 6,180.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,836.71 : 10,813.55 = 4,478.99 : x
  2. Step 2: Convert to fraction form
    7,836.71/10,813.55 = 4,478.99/x
  3. Step 3: Cross multiply
    7,836.71x = 10,813.55 × 4,478.99
  4. Step 4: Simplify right side
    7,836.71x = 48,433,705.85
  5. Step 5: Solve for x
    x = 48,433,705.85/7,836.71
  6. Step 6: Final answer
    x = 6,180.37

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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.