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Finding the Fourth Proportional to 76,718.85, 114,935.72 and 41,687.97

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Solution

The fourth proportional to 76,718.85, 114,935.72 and 41,687.97 is: 62,454.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,718.85 : 114,935.72 = 41,687.97 : x
  2. Step 2: Convert to fraction form
    76,718.85/114,935.72 = 41,687.97/x
  3. Step 3: Cross multiply
    76,718.85x = 114,935.72 × 41,687.97
  4. Step 4: Simplify right side
    76,718.85x = 4,791,436,638.85
  5. Step 5: Solve for x
    x = 4,791,436,638.85/76,718.85
  6. Step 6: Final answer
    x = 62,454.49

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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.