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Finding the Fourth Proportional to 86,611.82, 119,542.11 and 50,820.62

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Solution

The fourth proportional to 86,611.82, 119,542.11 and 50,820.62 is: 70,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,611.82 : 119,542.11 = 50,820.62 : x
  2. Step 2: Convert to fraction form
    86,611.82/119,542.11 = 50,820.62/x
  3. Step 3: Cross multiply
    86,611.82x = 119,542.11 × 50,820.62
  4. Step 4: Simplify right side
    86,611.82x = 6,075,204,146.31
  5. Step 5: Solve for x
    x = 6,075,204,146.31/86,611.82
  6. Step 6: Final answer
    x = 70,142.90

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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.