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Finding the Fourth Proportional to 20,758.60, 30,936.55 and 20,094.44

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Solution

The fourth proportional to 20,758.60, 30,936.55 and 20,094.44 is: 29,946.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.60 : 30,936.55 = 20,094.44 : x
  2. Step 2: Convert to fraction form
    20,758.60/30,936.55 = 20,094.44/x
  3. Step 3: Cross multiply
    20,758.60x = 30,936.55 × 20,094.44
  4. Step 4: Simplify right side
    20,758.60x = 621,652,647.78
  5. Step 5: Solve for x
    x = 621,652,647.78/20,758.60
  6. Step 6: Final answer
    x = 29,946.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.