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Finding the Fourth Proportional to 18,657.95, 25,745.85 and 10,702.73

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Solution

The fourth proportional to 18,657.95, 25,745.85 and 10,702.73 is: 14,768.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.95 : 25,745.85 = 10,702.73 : x
  2. Step 2: Convert to fraction form
    18,657.95/25,745.85 = 10,702.73/x
  3. Step 3: Cross multiply
    18,657.95x = 25,745.85 × 10,702.73
  4. Step 4: Simplify right side
    18,657.95x = 275,550,945.54
  5. Step 5: Solve for x
    x = 275,550,945.54/18,657.95
  6. Step 6: Final answer
    x = 14,768.56

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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.