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Finding the Fourth Proportional to 19,051.65, 28,578.84 and 6,571.49

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Solution

The fourth proportional to 19,051.65, 28,578.84 and 6,571.49 is: 9,857.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,051.65 : 28,578.84 = 6,571.49 : x
  2. Step 2: Convert to fraction form
    19,051.65/28,578.84 = 6,571.49/x
  3. Step 3: Cross multiply
    19,051.65x = 28,578.84 × 6,571.49
  4. Step 4: Simplify right side
    19,051.65x = 187,805,561.27
  5. Step 5: Solve for x
    x = 187,805,561.27/19,051.65
  6. Step 6: Final answer
    x = 9,857.71

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1.5x scale

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.