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Finding the Fourth Proportional to 11,479.86, 17,118.77 and 10,571.04

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Solution

The fourth proportional to 11,479.86, 17,118.77 and 10,571.04 is: 15,763.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.86 : 17,118.77 = 10,571.04 : x
  2. Step 2: Convert to fraction form
    11,479.86/17,118.77 = 10,571.04/x
  3. Step 3: Cross multiply
    11,479.86x = 17,118.77 × 10,571.04
  4. Step 4: Simplify right side
    11,479.86x = 180,963,149.57
  5. Step 5: Solve for x
    x = 180,963,149.57/11,479.86
  6. Step 6: Final answer
    x = 15,763.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.