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Finding the Fourth Proportional to 69,683.89, 96,161.57 and 39,472.01

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Solution

The fourth proportional to 69,683.89, 96,161.57 and 39,472.01 is: 54,470.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,683.89 : 96,161.57 = 39,472.01 : x
  2. Step 2: Convert to fraction form
    69,683.89/96,161.57 = 39,472.01/x
  3. Step 3: Cross multiply
    69,683.89x = 96,161.57 × 39,472.01
  4. Step 4: Simplify right side
    69,683.89x = 3,795,690,452.66
  5. Step 5: Solve for x
    x = 3,795,690,452.66/69,683.89
  6. Step 6: Final answer
    x = 54,470.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.