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Finding the Fourth Proportional to 16,974.80, 23,425.20 and 9,421.22

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Solution

The fourth proportional to 16,974.80, 23,425.20 and 9,421.22 is: 13,001.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,974.80 : 23,425.20 = 9,421.22 : x
  2. Step 2: Convert to fraction form
    16,974.80/23,425.20 = 9,421.22/x
  3. Step 3: Cross multiply
    16,974.80x = 23,425.20 × 9,421.22
  4. Step 4: Simplify right side
    16,974.80x = 220,694,021.31
  5. Step 5: Solve for x
    x = 220,694,021.31/16,974.80
  6. Step 6: Final answer
    x = 13,001.27

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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.