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Finding the Fourth Proportional to 92,891.80, 128,191.34 and 50,450.33

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Solution

The fourth proportional to 92,891.80, 128,191.34 and 50,450.33 is: 69,621.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,891.80 : 128,191.34 = 50,450.33 : x
  2. Step 2: Convert to fraction form
    92,891.80/128,191.34 = 50,450.33/x
  3. Step 3: Cross multiply
    92,891.80x = 128,191.34 × 50,450.33
  4. Step 4: Simplify right side
    92,891.80x = 6,467,295,131.67
  5. Step 5: Solve for x
    x = 6,467,295,131.67/92,891.80
  6. Step 6: Final answer
    x = 69,621.81

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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.