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Finding the Fourth Proportional to 17,137.20, 25,686.60 and 9,745.20

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Solution

The fourth proportional to 17,137.20, 25,686.60 and 9,745.20 is: 14,606.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,137.20 : 25,686.60 = 9,745.20 : x
  2. Step 2: Convert to fraction form
    17,137.20/25,686.60 = 9,745.20/x
  3. Step 3: Cross multiply
    17,137.20x = 25,686.60 × 9,745.20
  4. Step 4: Simplify right side
    17,137.20x = 250,321,054.32
  5. Step 5: Solve for x
    x = 250,321,054.32/17,137.20
  6. Step 6: Final answer
    x = 14,606.88

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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.