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Finding the Fourth Proportional to 70,499.92, 105,614.56 and 43,766.56

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Solution

The fourth proportional to 70,499.92, 105,614.56 and 43,766.56 is: 65,565.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,499.92 : 105,614.56 = 43,766.56 : x
  2. Step 2: Convert to fraction form
    70,499.92/105,614.56 = 43,766.56/x
  3. Step 3: Cross multiply
    70,499.92x = 105,614.56 × 43,766.56
  4. Step 4: Simplify right side
    70,499.92x = 4,622,385,977.11
  5. Step 5: Solve for x
    x = 4,622,385,977.11/70,499.92
  6. Step 6: Final answer
    x = 65,565.83

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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.