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Finding the Fourth Proportional to 71,361.63, 98,479.04 and 39,532.59

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Solution

The fourth proportional to 71,361.63, 98,479.04 and 39,532.59 is: 54,554.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,361.63 : 98,479.04 = 39,532.59 : x
  2. Step 2: Convert to fraction form
    71,361.63/98,479.04 = 39,532.59/x
  3. Step 3: Cross multiply
    71,361.63x = 98,479.04 × 39,532.59
  4. Step 4: Simplify right side
    71,361.63x = 3,893,131,511.91
  5. Step 5: Solve for x
    x = 3,893,131,511.91/71,361.63
  6. Step 6: Final answer
    x = 54,554.97

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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.