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Finding the Fourth Proportional to 22,194.68, 30,621.90 and 13,362.68

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Solution

The fourth proportional to 22,194.68, 30,621.90 and 13,362.68 is: 18,436.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,194.68 : 30,621.90 = 13,362.68 : x
  2. Step 2: Convert to fraction form
    22,194.68/30,621.90 = 13,362.68/x
  3. Step 3: Cross multiply
    22,194.68x = 30,621.90 × 13,362.68
  4. Step 4: Simplify right side
    22,194.68x = 409,190,650.69
  5. Step 5: Solve for x
    x = 409,190,650.69/22,194.68
  6. Step 6: Final answer
    x = 18,436.43

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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.