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Finding the Fourth Proportional to 70,501.92, 105,617.56 and 43,768.56

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Solution

The fourth proportional to 70,501.92, 105,617.56 and 43,768.56 is: 65,568.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,501.92 : 105,617.56 = 43,768.56 : x
  2. Step 2: Convert to fraction form
    70,501.92/105,617.56 = 43,768.56/x
  3. Step 3: Cross multiply
    70,501.92x = 105,617.56 × 43,768.56
  4. Step 4: Simplify right side
    70,501.92x = 4,622,728,511.91
  5. Step 5: Solve for x
    x = 4,622,728,511.91/70,501.92
  6. Step 6: Final answer
    x = 65,568.83

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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.