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Finding the Fourth Proportional to 5,324.61, 7,975.29 and 4,389.67

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Solution

The fourth proportional to 5,324.61, 7,975.29 and 4,389.67 is: 6,574.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,324.61 : 7,975.29 = 4,389.67 : x
  2. Step 2: Convert to fraction form
    5,324.61/7,975.29 = 4,389.67/x
  3. Step 3: Cross multiply
    5,324.61x = 7,975.29 × 4,389.67
  4. Step 4: Simplify right side
    5,324.61x = 35,008,858.22
  5. Step 5: Solve for x
    x = 35,008,858.22/5,324.61
  6. Step 6: Final answer
    x = 6,574.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.