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Finding the Fourth Proportional to 33,196.80, 49,795.20 and 20,908.80

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Solution

The fourth proportional to 33,196.80, 49,795.20 and 20,908.80 is: 31,363.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,196.80 : 49,795.20 = 20,908.80 : x
  2. Step 2: Convert to fraction form
    33,196.80/49,795.20 = 20,908.80/x
  3. Step 3: Cross multiply
    33,196.80x = 49,795.20 × 20,908.80
  4. Step 4: Simplify right side
    33,196.80x = 1,041,157,877.76
  5. Step 5: Solve for x
    x = 1,041,157,877.76/33,196.80
  6. Step 6: Final answer
    x = 31,363.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.