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Finding the Fourth Proportional to 74,872.82, 103,287.20 and 44,636.84

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Solution

The fourth proportional to 74,872.82, 103,287.20 and 44,636.84 is: 61,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,872.82 : 103,287.20 = 44,636.84 : x
  2. Step 2: Convert to fraction form
    74,872.82/103,287.20 = 44,636.84/x
  3. Step 3: Cross multiply
    74,872.82x = 103,287.20 × 44,636.84
  4. Step 4: Simplify right side
    74,872.82x = 4,610,413,480.83
  5. Step 5: Solve for x
    x = 4,610,413,480.83/74,872.82
  6. Step 6: Final answer
    x = 61,576.60

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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.