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Finding the Fourth Proportional to 36,491.12, 50,357.78 and 19,724.12

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Solution

The fourth proportional to 36,491.12, 50,357.78 and 19,724.12 is: 27,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,491.12 : 50,357.78 = 19,724.12 : x
  2. Step 2: Convert to fraction form
    36,491.12/50,357.78 = 19,724.12/x
  3. Step 3: Cross multiply
    36,491.12x = 50,357.78 × 19,724.12
  4. Step 4: Simplify right side
    36,491.12x = 993,262,895.65
  5. Step 5: Solve for x
    x = 993,262,895.65/36,491.12
  6. Step 6: Final answer
    x = 27,219.30

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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.