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Finding the Fourth Proportional to 21,593.22, 29,798.22 and 12,161.58

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Solution

The fourth proportional to 21,593.22, 29,798.22 and 12,161.58 is: 16,782.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,593.22 : 29,798.22 = 12,161.58 : x
  2. Step 2: Convert to fraction form
    21,593.22/29,798.22 = 12,161.58/x
  3. Step 3: Cross multiply
    21,593.22x = 29,798.22 × 12,161.58
  4. Step 4: Simplify right side
    21,593.22x = 362,393,436.39
  5. Step 5: Solve for x
    x = 362,393,436.39/21,593.22
  6. Step 6: Final answer
    x = 16,782.74

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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.