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Finding the Fourth Proportional to 70,601.92, 105,903.15 and 49,635.81

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Solution

The fourth proportional to 70,601.92, 105,903.15 and 49,635.81 is: 74,453.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,601.92 : 105,903.15 = 49,635.81 : x
  2. Step 2: Convert to fraction form
    70,601.92/105,903.15 = 49,635.81/x
  3. Step 3: Cross multiply
    70,601.92x = 105,903.15 × 49,635.81
  4. Step 4: Simplify right side
    70,601.92x = 5,256,588,445.67
  5. Step 5: Solve for x
    x = 5,256,588,445.67/70,601.92
  6. Step 6: Final answer
    x = 74,453.90

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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.