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Finding the Fourth Proportional to 17,107.70, 25,642.35 and 7,245.30

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Solution

The fourth proportional to 17,107.70, 25,642.35 and 7,245.30 is: 10,859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,107.70 : 25,642.35 = 7,245.30 : x
  2. Step 2: Convert to fraction form
    17,107.70/25,642.35 = 7,245.30/x
  3. Step 3: Cross multiply
    17,107.70x = 25,642.35 × 7,245.30
  4. Step 4: Simplify right side
    17,107.70x = 185,786,518.46
  5. Step 5: Solve for x
    x = 185,786,518.46/17,107.70
  6. Step 6: Final answer
    x = 10,859.82

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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.