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Finding the Fourth Proportional to 33,992.79, 50,931.64 and 20,817.64

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Solution

The fourth proportional to 33,992.79, 50,931.64 and 20,817.64 is: 31,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,992.79 : 50,931.64 = 20,817.64 : x
  2. Step 2: Convert to fraction form
    33,992.79/50,931.64 = 20,817.64/x
  3. Step 3: Cross multiply
    33,992.79x = 50,931.64 × 20,817.64
  4. Step 4: Simplify right side
    33,992.79x = 1,060,276,546.13
  5. Step 5: Solve for x
    x = 1,060,276,546.13/33,992.79
  6. Step 6: Final answer
    x = 31,191.22

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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.