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Finding the Fourth Proportional to 66,015.44, 91,103.68 and 47,197.52

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Solution

The fourth proportional to 66,015.44, 91,103.68 and 47,197.52 is: 65,134.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,015.44 : 91,103.68 = 47,197.52 : x
  2. Step 2: Convert to fraction form
    66,015.44/91,103.68 = 47,197.52/x
  3. Step 3: Cross multiply
    66,015.44x = 91,103.68 × 47,197.52
  4. Step 4: Simplify right side
    66,015.44x = 4,299,867,758.87
  5. Step 5: Solve for x
    x = 4,299,867,758.87/66,015.44
  6. Step 6: Final answer
    x = 65,134.27

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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.