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Finding the Fourth Proportional to 17,137.20, 25,648.20 and 11,953.20

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Solution

The fourth proportional to 17,137.20, 25,648.20 and 11,953.20 is: 17,889.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,137.20 : 25,648.20 = 11,953.20 : x
  2. Step 2: Convert to fraction form
    17,137.20/25,648.20 = 11,953.20/x
  3. Step 3: Cross multiply
    17,137.20x = 25,648.20 × 11,953.20
  4. Step 4: Simplify right side
    17,137.20x = 306,578,064.24
  5. Step 5: Solve for x
    x = 306,578,064.24/17,137.20
  6. Step 6: Final answer
    x = 17,889.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.