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Finding the Fourth Proportional to 74,489.79, 102,805.29 and 46,199.73

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Solution

The fourth proportional to 74,489.79, 102,805.29 and 46,199.73 is: 63,761.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,489.79 : 102,805.29 = 46,199.73 : x
  2. Step 2: Convert to fraction form
    74,489.79/102,805.29 = 46,199.73/x
  3. Step 3: Cross multiply
    74,489.79x = 102,805.29 × 46,199.73
  4. Step 4: Simplify right side
    74,489.79x = 4,749,576,640.57
  5. Step 5: Solve for x
    x = 4,749,576,640.57/74,489.79
  6. Step 6: Final answer
    x = 63,761.44

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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.