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Finding the Fourth Proportional to 74,576.79, 102,915.98 and 41,042.79

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Solution

The fourth proportional to 74,576.79, 102,915.98 and 41,042.79 is: 56,639.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,576.79 : 102,915.98 = 41,042.79 : x
  2. Step 2: Convert to fraction form
    74,576.79/102,915.98 = 41,042.79/x
  3. Step 3: Cross multiply
    74,576.79x = 102,915.98 × 41,042.79
  4. Step 4: Simplify right side
    74,576.79x = 4,223,958,954.78
  5. Step 5: Solve for x
    x = 4,223,958,954.78/74,576.79
  6. Step 6: Final answer
    x = 56,639.06

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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.