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Finding the Fourth Proportional to 18,692.78, 25,795.94 and 10,194.74

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Solution

The fourth proportional to 18,692.78, 25,795.94 and 10,194.74 is: 14,068.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.78 : 25,795.94 = 10,194.74 : x
  2. Step 2: Convert to fraction form
    18,692.78/25,795.94 = 10,194.74/x
  3. Step 3: Cross multiply
    18,692.78x = 25,795.94 × 10,194.74
  4. Step 4: Simplify right side
    18,692.78x = 262,982,850.38
  5. Step 5: Solve for x
    x = 262,982,850.38/18,692.78
  6. Step 6: Final answer
    x = 14,068.69

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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.