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Finding the Fourth Proportional to 11,845.72, 17,776.50 and 4,920.22

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Solution

The fourth proportional to 11,845.72, 17,776.50 and 4,920.22 is: 7,383.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,845.72 : 17,776.50 = 4,920.22 : x
  2. Step 2: Convert to fraction form
    11,845.72/17,776.50 = 4,920.22/x
  3. Step 3: Cross multiply
    11,845.72x = 17,776.50 × 4,920.22
  4. Step 4: Simplify right side
    11,845.72x = 87,464,290.83
  5. Step 5: Solve for x
    x = 87,464,290.83/11,845.72
  6. Step 6: Final answer
    x = 7,383.62

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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.