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Finding the Fourth Proportional to 71,812.85, 99,113.74 and 41,616.54

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Solution

The fourth proportional to 71,812.85, 99,113.74 and 41,616.54 is: 57,437.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,812.85 : 99,113.74 = 41,616.54 : x
  2. Step 2: Convert to fraction form
    71,812.85/99,113.74 = 41,616.54/x
  3. Step 3: Cross multiply
    71,812.85x = 99,113.74 × 41,616.54
  4. Step 4: Simplify right side
    71,812.85x = 4,124,770,821.22
  5. Step 5: Solve for x
    x = 4,124,770,821.22/71,812.85
  6. Step 6: Final answer
    x = 57,437.79

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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.