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Finding the Fourth Proportional to 71,494.70, 98,674.53 and 39,673.82

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Solution

The fourth proportional to 71,494.70, 98,674.53 and 39,673.82 is: 54,756.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,494.70 : 98,674.53 = 39,673.82 : x
  2. Step 2: Convert to fraction form
    71,494.70/98,674.53 = 39,673.82/x
  3. Step 3: Cross multiply
    71,494.70x = 98,674.53 × 39,673.82
  4. Step 4: Simplify right side
    71,494.70x = 3,914,795,541.80
  5. Step 5: Solve for x
    x = 3,914,795,541.80/71,494.70
  6. Step 6: Final answer
    x = 54,756.44

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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.