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Finding the Fourth Proportional to 112,698.99, 155,513.84 and 67,367.97

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Solution

The fourth proportional to 112,698.99, 155,513.84 and 67,367.97 is: 92,961.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,698.99 : 155,513.84 = 67,367.97 : x
  2. Step 2: Convert to fraction form
    112,698.99/155,513.84 = 67,367.97/x
  3. Step 3: Cross multiply
    112,698.99x = 155,513.84 × 67,367.97
  4. Step 4: Simplify right side
    112,698.99x = 10,476,651,370.87
  5. Step 5: Solve for x
    x = 10,476,651,370.87/112,698.99
  6. Step 6: Final answer
    x = 92,961.36

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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.