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Finding the Fourth Proportional to 118,155.80, 163,026.99 and 67,164.54

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Solution

The fourth proportional to 118,155.80, 163,026.99 and 67,164.54 is: 92,671.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,155.80 : 163,026.99 = 67,164.54 : x
  2. Step 2: Convert to fraction form
    118,155.80/163,026.99 = 67,164.54/x
  3. Step 3: Cross multiply
    118,155.80x = 163,026.99 × 67,164.54
  4. Step 4: Simplify right side
    118,155.80x = 10,949,632,790.93
  5. Step 5: Solve for x
    x = 10,949,632,790.93/118,155.80
  6. Step 6: Final answer
    x = 92,671.14

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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.