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Finding the Fourth Proportional to 17,213.88, 23,761.09 and 10,851.20

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Solution

The fourth proportional to 17,213.88, 23,761.09 and 10,851.20 is: 14,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,213.88 : 23,761.09 = 10,851.20 : x
  2. Step 2: Convert to fraction form
    17,213.88/23,761.09 = 10,851.20/x
  3. Step 3: Cross multiply
    17,213.88x = 23,761.09 × 10,851.20
  4. Step 4: Simplify right side
    17,213.88x = 257,836,339.81
  5. Step 5: Solve for x
    x = 257,836,339.81/17,213.88
  6. Step 6: Final answer
    x = 14,978.40

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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.