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Finding the Fourth Proportional to 198,745.55, 274,276.13 and 113,879.01

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Solution

The fourth proportional to 198,745.55, 274,276.13 and 113,879.01 is: 157,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,745.55 : 274,276.13 = 113,879.01 : x
  2. Step 2: Convert to fraction form
    198,745.55/274,276.13 = 113,879.01/x
  3. Step 3: Cross multiply
    198,745.55x = 274,276.13 × 113,879.01
  4. Step 4: Simplify right side
    198,745.55x = 31,234,294,610.17
  5. Step 5: Solve for x
    x = 31,234,294,610.17/198,745.55
  6. Step 6: Final answer
    x = 157,157.20

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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.