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Finding the Fourth Proportional to 6,672.69, 9,209.43 and 4,020.36

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Solution

The fourth proportional to 6,672.69, 9,209.43 and 4,020.36 is: 5,548.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,672.69 : 9,209.43 = 4,020.36 : x
  2. Step 2: Convert to fraction form
    6,672.69/9,209.43 = 4,020.36/x
  3. Step 3: Cross multiply
    6,672.69x = 9,209.43 × 4,020.36
  4. Step 4: Simplify right side
    6,672.69x = 37,025,223.99
  5. Step 5: Solve for x
    x = 37,025,223.99/6,672.69
  6. Step 6: Final answer
    x = 5,548.77

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1.5x scale

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.