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Finding the Fourth Proportional to 33,196.68, 45,813.68 and 20,281.48

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Solution

The fourth proportional to 33,196.68, 45,813.68 and 20,281.48 is: 27,989.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,196.68 : 45,813.68 = 20,281.48 : x
  2. Step 2: Convert to fraction form
    33,196.68/45,813.68 = 20,281.48/x
  3. Step 3: Cross multiply
    33,196.68x = 45,813.68 × 20,281.48
  4. Step 4: Simplify right side
    33,196.68x = 929,169,234.65
  5. Step 5: Solve for x
    x = 929,169,234.65/33,196.68
  6. Step 6: Final answer
    x = 27,989.82

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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.