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Finding the Fourth Proportional to 22,461.90, 30,999.27 and 12,391.27

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Solution

The fourth proportional to 22,461.90, 30,999.27 and 12,391.27 is: 17,100.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,461.90 : 30,999.27 = 12,391.27 : x
  2. Step 2: Convert to fraction form
    22,461.90/30,999.27 = 12,391.27/x
  3. Step 3: Cross multiply
    22,461.90x = 30,999.27 × 12,391.27
  4. Step 4: Simplify right side
    22,461.90x = 384,120,324.37
  5. Step 5: Solve for x
    x = 384,120,324.37/22,461.90
  6. Step 6: Final answer
    x = 17,100.97

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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.