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Finding the Fourth Proportional to 78,737.72, 118,174.82 and 41,324.23

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Solution

The fourth proportional to 78,737.72, 118,174.82 and 41,324.23 is: 62,022.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,737.72 : 118,174.82 = 41,324.23 : x
  2. Step 2: Convert to fraction form
    78,737.72/118,174.82 = 41,324.23/x
  3. Step 3: Cross multiply
    78,737.72x = 118,174.82 × 41,324.23
  4. Step 4: Simplify right side
    78,737.72x = 4,883,483,066.93
  5. Step 5: Solve for x
    x = 4,883,483,066.93/78,737.72
  6. Step 6: Final answer
    x = 62,022.15

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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.