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Finding the Fourth Proportional to 71,381.65, 98,515.43 and 41,166.97

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Solution

The fourth proportional to 71,381.65, 98,515.43 and 41,166.97 is: 56,815.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,381.65 : 98,515.43 = 41,166.97 : x
  2. Step 2: Convert to fraction form
    71,381.65/98,515.43 = 41,166.97/x
  3. Step 3: Cross multiply
    71,381.65x = 98,515.43 × 41,166.97
  4. Step 4: Simplify right side
    71,381.65x = 4,055,581,751.35
  5. Step 5: Solve for x
    x = 4,055,581,751.35/71,381.65
  6. Step 6: Final answer
    x = 56,815.47

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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.