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Finding the Fourth Proportional to 18,622.94, 25,692.50 and 13,789.17

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Solution

The fourth proportional to 18,622.94, 25,692.50 and 13,789.17 is: 19,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.94 : 25,692.50 = 13,789.17 : x
  2. Step 2: Convert to fraction form
    18,622.94/25,692.50 = 13,789.17/x
  3. Step 3: Cross multiply
    18,622.94x = 25,692.50 × 13,789.17
  4. Step 4: Simplify right side
    18,622.94x = 354,278,284.70
  5. Step 5: Solve for x
    x = 354,278,284.70/18,622.94
  6. Step 6: Final answer
    x = 19,023.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.