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Finding the Fourth Proportional to 65,571.86, 98,191.70 and 40,660.57

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Solution

The fourth proportional to 65,571.86, 98,191.70 and 40,660.57 is: 60,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,571.86 : 98,191.70 = 40,660.57 : x
  2. Step 2: Convert to fraction form
    65,571.86/98,191.70 = 40,660.57/x
  3. Step 3: Cross multiply
    65,571.86x = 98,191.70 × 40,660.57
  4. Step 4: Simplify right side
    65,571.86x = 3,992,530,491.27
  5. Step 5: Solve for x
    x = 3,992,530,491.27/65,571.86
  6. Step 6: Final answer
    x = 60,887.86

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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.