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Finding the Fourth Proportional to 18,692.60, 28,037.88 and 7,004.96

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Solution

The fourth proportional to 18,692.60, 28,037.88 and 7,004.96 is: 10,507.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.60 : 28,037.88 = 7,004.96 : x
  2. Step 2: Convert to fraction form
    18,692.60/28,037.88 = 7,004.96/x
  3. Step 3: Cross multiply
    18,692.60x = 28,037.88 × 7,004.96
  4. Step 4: Simplify right side
    18,692.60x = 196,404,227.88
  5. Step 5: Solve for x
    x = 196,404,227.88/18,692.60
  6. Step 6: Final answer
    x = 10,507.06

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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.