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Finding the Fourth Proportional to 5,367.72, 7,407.42 and 3,009.86

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Solution

The fourth proportional to 5,367.72, 7,407.42 and 3,009.86 is: 4,153.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,367.72 : 7,407.42 = 3,009.86 : x
  2. Step 2: Convert to fraction form
    5,367.72/7,407.42 = 3,009.86/x
  3. Step 3: Cross multiply
    5,367.72x = 7,407.42 × 3,009.86
  4. Step 4: Simplify right side
    5,367.72x = 22,295,260.12
  5. Step 5: Solve for x
    x = 22,295,260.12/5,367.72
  6. Step 6: Final answer
    x = 4,153.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.