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Finding the Fourth Proportional to 72,674.43, 100,226.01 and 47,156.43

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Solution

The fourth proportional to 72,674.43, 100,226.01 and 47,156.43 is: 65,033.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,674.43 : 100,226.01 = 47,156.43 : x
  2. Step 2: Convert to fraction form
    72,674.43/100,226.01 = 47,156.43/x
  3. Step 3: Cross multiply
    72,674.43x = 100,226.01 × 47,156.43
  4. Step 4: Simplify right side
    72,674.43x = 4,726,300,824.74
  5. Step 5: Solve for x
    x = 4,726,300,824.74/72,674.43
  6. Step 6: Final answer
    x = 65,033.89

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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.