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Finding the Fourth Proportional to 50,786.88, 70,120.53 and 31,674.12

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Solution

The fourth proportional to 50,786.88, 70,120.53 and 31,674.12 is: 43,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,786.88 : 70,120.53 = 31,674.12 : x
  2. Step 2: Convert to fraction form
    50,786.88/70,120.53 = 31,674.12/x
  3. Step 3: Cross multiply
    50,786.88x = 70,120.53 × 31,674.12
  4. Step 4: Simplify right side
    50,786.88x = 2,221,006,081.68
  5. Step 5: Solve for x
    x = 2,221,006,081.68/50,786.88
  6. Step 6: Final answer
    x = 43,731.89

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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.