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Finding the Fourth Proportional to 79,295.96, 118,990.38 and 31,903.67

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Solution

The fourth proportional to 79,295.96, 118,990.38 and 31,903.67 is: 47,874.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,295.96 : 118,990.38 = 31,903.67 : x
  2. Step 2: Convert to fraction form
    79,295.96/118,990.38 = 31,903.67/x
  3. Step 3: Cross multiply
    79,295.96x = 118,990.38 × 31,903.67
  4. Step 4: Simplify right side
    79,295.96x = 3,796,230,233.81
  5. Step 5: Solve for x
    x = 3,796,230,233.81/79,295.96
  6. Step 6: Final answer
    x = 47,874.19

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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.