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Finding the Fourth Proportional to 66,573.18, 91,871.61 and 37,891.44

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Solution

The fourth proportional to 66,573.18, 91,871.61 and 37,891.44 is: 52,290.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,573.18 : 91,871.61 = 37,891.44 : x
  2. Step 2: Convert to fraction form
    66,573.18/91,871.61 = 37,891.44/x
  3. Step 3: Cross multiply
    66,573.18x = 91,871.61 × 37,891.44
  4. Step 4: Simplify right side
    66,573.18x = 3,481,147,598.02
  5. Step 5: Solve for x
    x = 3,481,147,598.02/66,573.18
  6. Step 6: Final answer
    x = 52,290.54

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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.