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Finding the Fourth Proportional to 139,704.75, 192,793.47 and 76,043.00

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Solution

The fourth proportional to 139,704.75, 192,793.47 and 76,043.00 is: 104,939.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,704.75 : 192,793.47 = 76,043.00 : x
  2. Step 2: Convert to fraction form
    139,704.75/192,793.47 = 76,043.00/x
  3. Step 3: Cross multiply
    139,704.75x = 192,793.47 × 76,043.00
  4. Step 4: Simplify right side
    139,704.75x = 14,660,594,036.03
  5. Step 5: Solve for x
    x = 14,660,594,036.03/139,704.75
  6. Step 6: Final answer
    x = 104,939.84

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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.