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Finding the Fourth Proportional to 19,795.20, 29,692.80 and 13,963.20

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Solution

The fourth proportional to 19,795.20, 29,692.80 and 13,963.20 is: 20,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,795.20 : 29,692.80 = 13,963.20 : x
  2. Step 2: Convert to fraction form
    19,795.20/29,692.80 = 13,963.20/x
  3. Step 3: Cross multiply
    19,795.20x = 29,692.80 × 13,963.20
  4. Step 4: Simplify right side
    19,795.20x = 414,606,504.96
  5. Step 5: Solve for x
    x = 414,606,504.96/19,795.20
  6. Step 6: Final answer
    x = 20,944.80

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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.