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Finding the Fourth Proportional to 22,409.94, 30,859.02 and 21,912.68

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Solution

The fourth proportional to 22,409.94, 30,859.02 and 21,912.68 is: 30,174.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,409.94 : 30,859.02 = 21,912.68 : x
  2. Step 2: Convert to fraction form
    22,409.94/30,859.02 = 21,912.68/x
  3. Step 3: Cross multiply
    22,409.94x = 30,859.02 × 21,912.68
  4. Step 4: Simplify right side
    22,409.94x = 676,203,676.08
  5. Step 5: Solve for x
    x = 676,203,676.08/22,409.94
  6. Step 6: Final answer
    x = 30,174.27

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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.