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Finding the Fourth Proportional to 74,957, 103,440.94 and 41,423

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Solution

The fourth proportional to 74,957, 103,440.94 and 41,423 is: 57,163.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,957 : 103,440.94 = 41,423 : x
  2. Step 2: Convert to fraction form
    74,957/103,440.94 = 41,423/x
  3. Step 3: Cross multiply
    74,957x = 103,440.94 × 41,423
  4. Step 4: Simplify right side
    74,957x = 4,284,834,057.62
  5. Step 5: Solve for x
    x = 4,284,834,057.62/74,957
  6. Step 6: Final answer
    x = 57,163.89

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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.