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Finding the Fourth Proportional to 5,355.20, 7,393.72 and 3,368.80

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Solution

The fourth proportional to 5,355.20, 7,393.72 and 3,368.80 is: 4,651.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,355.20 : 7,393.72 = 3,368.80 : x
  2. Step 2: Convert to fraction form
    5,355.20/7,393.72 = 3,368.80/x
  3. Step 3: Cross multiply
    5,355.20x = 7,393.72 × 3,368.80
  4. Step 4: Simplify right side
    5,355.20x = 24,907,963.94
  5. Step 5: Solve for x
    x = 24,907,963.94/5,355.20
  6. Step 6: Final answer
    x = 4,651.17

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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.