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Finding the Fourth Proportional to 71,504.46, 98,674.47 and 39,672.54

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Solution

The fourth proportional to 71,504.46, 98,674.47 and 39,672.54 is: 54,747.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,504.46 : 98,674.47 = 39,672.54 : x
  2. Step 2: Convert to fraction form
    71,504.46/98,674.47 = 39,672.54/x
  3. Step 3: Cross multiply
    71,504.46x = 98,674.47 × 39,672.54
  4. Step 4: Simplify right side
    71,504.46x = 3,914,666,858.05
  5. Step 5: Solve for x
    x = 3,914,666,858.05/71,504.46
  6. Step 6: Final answer
    x = 54,747.17

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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.