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Finding the Fourth Proportional to 22,203.93, 30,640.90 and 12,132.41

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Solution

The fourth proportional to 22,203.93, 30,640.90 and 12,132.41 is: 16,742.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,203.93 : 30,640.90 = 12,132.41 : x
  2. Step 2: Convert to fraction form
    22,203.93/30,640.90 = 12,132.41/x
  3. Step 3: Cross multiply
    22,203.93x = 30,640.90 × 12,132.41
  4. Step 4: Simplify right side
    22,203.93x = 371,747,800.78
  5. Step 5: Solve for x
    x = 371,747,800.78/22,203.93
  6. Step 6: Final answer
    x = 16,742.43

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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.