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Finding the Fourth Proportional to 115,251.50, 172,945.30 and 48,687.32

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Solution

The fourth proportional to 115,251.50, 172,945.30 and 48,687.32 is: 73,059.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,251.50 : 172,945.30 = 48,687.32 : x
  2. Step 2: Convert to fraction form
    115,251.50/172,945.30 = 48,687.32/x
  3. Step 3: Cross multiply
    115,251.50x = 172,945.30 × 48,687.32
  4. Step 4: Simplify right side
    115,251.50x = 8,420,243,163.60
  5. Step 5: Solve for x
    x = 8,420,243,163.60/115,251.50
  6. Step 6: Final answer
    x = 73,059.73

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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.