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Finding the Fourth Proportional to 5,392.51, 7,401.91 and 4,789.87

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Solution

The fourth proportional to 5,392.51, 7,401.91 and 4,789.87 is: 6,574.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,392.51 : 7,401.91 = 4,789.87 : x
  2. Step 2: Convert to fraction form
    5,392.51/7,401.91 = 4,789.87/x
  3. Step 3: Cross multiply
    5,392.51x = 7,401.91 × 4,789.87
  4. Step 4: Simplify right side
    5,392.51x = 35,454,186.65
  5. Step 5: Solve for x
    x = 35,454,186.65/5,392.51
  6. Step 6: Final answer
    x = 6,574.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.