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Finding the Fourth Proportional to 10,455.54, 15,679.22 and 3,790.46

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Solution

The fourth proportional to 10,455.54, 15,679.22 and 3,790.46 is: 5,684.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.54 : 15,679.22 = 3,790.46 : x
  2. Step 2: Convert to fraction form
    10,455.54/15,679.22 = 3,790.46/x
  3. Step 3: Cross multiply
    10,455.54x = 15,679.22 × 3,790.46
  4. Step 4: Simplify right side
    10,455.54x = 59,431,456.24
  5. Step 5: Solve for x
    x = 59,431,456.24/10,455.54
  6. Step 6: Final answer
    x = 5,684.21

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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.