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Finding the Fourth Proportional to 19,355.51, 28,989.92 and 16,824.26

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Solution

The fourth proportional to 19,355.51, 28,989.92 and 16,824.26 is: 25,198.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,355.51 : 28,989.92 = 16,824.26 : x
  2. Step 2: Convert to fraction form
    19,355.51/28,989.92 = 16,824.26/x
  3. Step 3: Cross multiply
    19,355.51x = 28,989.92 × 16,824.26
  4. Step 4: Simplify right side
    19,355.51x = 487,733,722.39
  5. Step 5: Solve for x
    x = 487,733,722.39/19,355.51
  6. Step 6: Final answer
    x = 25,198.71

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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.