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Finding the Fourth Proportional to 14,982.70, 20,936.90 and 14,982.70

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Solution

The fourth proportional to 14,982.70, 20,936.90 and 14,982.70 is: 20,936.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,982.70 : 20,936.90 = 14,982.70 : x
  2. Step 2: Convert to fraction form
    14,982.70/20,936.90 = 14,982.70/x
  3. Step 3: Cross multiply
    14,982.70x = 20,936.90 × 14,982.70
  4. Step 4: Simplify right side
    14,982.70x = 313,691,291.63
  5. Step 5: Solve for x
    x = 313,691,291.63/14,982.70
  6. Step 6: Final answer
    x = 20,936.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.