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Finding the Fourth Proportional to 118,163.16, 163,037.11 and 67,171.86

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Solution

The fourth proportional to 118,163.16, 163,037.11 and 67,171.86 is: 92,681.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,163.16 : 163,037.11 = 67,171.86 : x
  2. Step 2: Convert to fraction form
    118,163.16/163,037.11 = 67,171.86/x
  3. Step 3: Cross multiply
    118,163.16x = 163,037.11 × 67,171.86
  4. Step 4: Simplify right side
    118,163.16x = 10,951,505,927.72
  5. Step 5: Solve for x
    x = 10,951,505,927.72/118,163.16
  6. Step 6: Final answer
    x = 92,681.22

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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.