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Finding the Fourth Proportional to 19,093.60, 28,616.10 and 9,211.60

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Solution

The fourth proportional to 19,093.60, 28,616.10 and 9,211.60 is: 13,805.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,093.60 : 28,616.10 = 9,211.60 : x
  2. Step 2: Convert to fraction form
    19,093.60/28,616.10 = 9,211.60/x
  3. Step 3: Cross multiply
    19,093.60x = 28,616.10 × 9,211.60
  4. Step 4: Simplify right side
    19,093.60x = 263,600,066.76
  5. Step 5: Solve for x
    x = 263,600,066.76/19,093.60
  6. Step 6: Final answer
    x = 13,805.68

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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.