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Finding the Fourth Proportional to 50,953.99, 76,412.79 and 20,959.46

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Solution

The fourth proportional to 50,953.99, 76,412.79 and 20,959.46 is: 31,431.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,953.99 : 76,412.79 = 20,959.46 : x
  2. Step 2: Convert to fraction form
    50,953.99/76,412.79 = 20,959.46/x
  3. Step 3: Cross multiply
    50,953.99x = 76,412.79 × 20,959.46
  4. Step 4: Simplify right side
    50,953.99x = 1,601,570,778.93
  5. Step 5: Solve for x
    x = 1,601,570,778.93/50,953.99
  6. Step 6: Final answer
    x = 31,431.71

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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.