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Finding the Fourth Proportional to 6,578.99, 9,868.21 and 3,655.43

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Solution

The fourth proportional to 6,578.99, 9,868.21 and 3,655.43 is: 5,482.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,578.99 : 9,868.21 = 3,655.43 : x
  2. Step 2: Convert to fraction form
    6,578.99/9,868.21 = 3,655.43/x
  3. Step 3: Cross multiply
    6,578.99x = 9,868.21 × 3,655.43
  4. Step 4: Simplify right side
    6,578.99x = 36,072,550.88
  5. Step 5: Solve for x
    x = 36,072,550.88/6,578.99
  6. Step 6: Final answer
    x = 5,482.99

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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.