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Finding the Fourth Proportional to 5,365.60, 7,390.64 and 3,790.96

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Solution

The fourth proportional to 5,365.60, 7,390.64 and 3,790.96 is: 5,221.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,365.60 : 7,390.64 = 3,790.96 : x
  2. Step 2: Convert to fraction form
    5,365.60/7,390.64 = 3,790.96/x
  3. Step 3: Cross multiply
    5,365.60x = 7,390.64 × 3,790.96
  4. Step 4: Simplify right side
    5,365.60x = 28,017,620.61
  5. Step 5: Solve for x
    x = 28,017,620.61/5,365.60
  6. Step 6: Final answer
    x = 5,221.71

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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.