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Finding the Fourth Proportional to 192,422.32, 288,638.52 and 91,196.64

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Solution

The fourth proportional to 192,422.32, 288,638.52 and 91,196.64 is: 136,797.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,422.32 : 288,638.52 = 91,196.64 : x
  2. Step 2: Convert to fraction form
    192,422.32/288,638.52 = 91,196.64/x
  3. Step 3: Cross multiply
    192,422.32x = 288,638.52 × 91,196.64
  4. Step 4: Simplify right side
    192,422.32x = 26,322,863,198.57
  5. Step 5: Solve for x
    x = 26,322,863,198.57/192,422.32
  6. Step 6: Final answer
    x = 136,797.35

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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.