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Finding the Fourth Proportional to 91,245.50, 125,917.53 and 50,959.97

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Solution

The fourth proportional to 91,245.50, 125,917.53 and 50,959.97 is: 70,324.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,245.50 : 125,917.53 = 50,959.97 : x
  2. Step 2: Convert to fraction form
    91,245.50/125,917.53 = 50,959.97/x
  3. Step 3: Cross multiply
    91,245.50x = 125,917.53 × 50,959.97
  4. Step 4: Simplify right side
    91,245.50x = 6,416,753,551.27
  5. Step 5: Solve for x
    x = 6,416,753,551.27/91,245.50
  6. Step 6: Final answer
    x = 70,324.05

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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.