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Finding the Fourth Proportional to 5,347.86, 7,379.92 and 2,990.22

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Solution

The fourth proportional to 5,347.86, 7,379.92 and 2,990.22 is: 4,126.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.86 : 7,379.92 = 2,990.22 : x
  2. Step 2: Convert to fraction form
    5,347.86/7,379.92 = 2,990.22/x
  3. Step 3: Cross multiply
    5,347.86x = 7,379.92 × 2,990.22
  4. Step 4: Simplify right side
    5,347.86x = 22,067,532.53
  5. Step 5: Solve for x
    x = 22,067,532.53/5,347.86
  6. Step 6: Final answer
    x = 4,126.43

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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.