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Finding the Fourth Proportional to 68,575.41, 94,653.08 and 39,900.61

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Solution

The fourth proportional to 68,575.41, 94,653.08 and 39,900.61 is: 55,073.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,575.41 : 94,653.08 = 39,900.61 : x
  2. Step 2: Convert to fraction form
    68,575.41/94,653.08 = 39,900.61/x
  3. Step 3: Cross multiply
    68,575.41x = 94,653.08 × 39,900.61
  4. Step 4: Simplify right side
    68,575.41x = 3,776,715,923.26
  5. Step 5: Solve for x
    x = 3,776,715,923.26/68,575.41
  6. Step 6: Final answer
    x = 55,073.91

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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.