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Finding the Fourth Proportional to 55,197.34, 82,786.74 and 15,745.48

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Solution

The fourth proportional to 55,197.34, 82,786.74 and 15,745.48 is: 23,615.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,197.34 : 82,786.74 = 15,745.48 : x
  2. Step 2: Convert to fraction form
    55,197.34/82,786.74 = 15,745.48/x
  3. Step 3: Cross multiply
    55,197.34x = 82,786.74 × 15,745.48
  4. Step 4: Simplify right side
    55,197.34x = 1,303,516,958.94
  5. Step 5: Solve for x
    x = 1,303,516,958.94/55,197.34
  6. Step 6: Final answer
    x = 23,615.58

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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.