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Finding the Fourth Proportional to 12,563.76, 17,338.18 and 6,974.76

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Solution

The fourth proportional to 12,563.76, 17,338.18 and 6,974.76 is: 9,625.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,563.76 : 17,338.18 = 6,974.76 : x
  2. Step 2: Convert to fraction form
    12,563.76/17,338.18 = 6,974.76/x
  3. Step 3: Cross multiply
    12,563.76x = 17,338.18 × 6,974.76
  4. Step 4: Simplify right side
    12,563.76x = 120,929,644.34
  5. Step 5: Solve for x
    x = 120,929,644.34/12,563.76
  6. Step 6: Final answer
    x = 9,625.27

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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.