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Finding the Fourth Proportional to 72,958.74, 100,766.10 and 49,043.94

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Solution

The fourth proportional to 72,958.74, 100,766.10 and 49,043.94 is: 67,736.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,958.74 : 100,766.10 = 49,043.94 : x
  2. Step 2: Convert to fraction form
    72,958.74/100,766.10 = 49,043.94/x
  3. Step 3: Cross multiply
    72,958.74x = 100,766.10 × 49,043.94
  4. Step 4: Simplify right side
    72,958.74x = 4,941,966,562.43
  5. Step 5: Solve for x
    x = 4,941,966,562.43/72,958.74
  6. Step 6: Final answer
    x = 67,736.46

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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.