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Finding the Fourth Proportional to 12,425.54, 17,144.80 and 6,974.80

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Solution

The fourth proportional to 12,425.54, 17,144.80 and 6,974.80 is: 9,623.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.54 : 17,144.80 = 6,974.80 : x
  2. Step 2: Convert to fraction form
    12,425.54/17,144.80 = 6,974.80/x
  3. Step 3: Cross multiply
    12,425.54x = 17,144.80 × 6,974.80
  4. Step 4: Simplify right side
    12,425.54x = 119,581,490.74
  5. Step 5: Solve for x
    x = 119,581,490.74/12,425.54
  6. Step 6: Final answer
    x = 9,623.85

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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.