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Finding the Fourth Proportional to 5,436.80, 8,172.60 and 5,051.60

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Solution

The fourth proportional to 5,436.80, 8,172.60 and 5,051.60 is: 7,593.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436.80 : 8,172.60 = 5,051.60 : x
  2. Step 2: Convert to fraction form
    5,436.80/8,172.60 = 5,051.60/x
  3. Step 3: Cross multiply
    5,436.80x = 8,172.60 × 5,051.60
  4. Step 4: Simplify right side
    5,436.80x = 41,284,706.16
  5. Step 5: Solve for x
    x = 41,284,706.16/5,436.80
  6. Step 6: Final answer
    x = 7,593.57

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.