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Finding the Fourth Proportional to 61,295.40, 84,619.92 and 41,257.60

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Solution

The fourth proportional to 61,295.40, 84,619.92 and 41,257.60 is: 56,957.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,295.40 : 84,619.92 = 41,257.60 : x
  2. Step 2: Convert to fraction form
    61,295.40/84,619.92 = 41,257.60/x
  3. Step 3: Cross multiply
    61,295.40x = 84,619.92 × 41,257.60
  4. Step 4: Simplify right side
    61,295.40x = 3,491,214,811.39
  5. Step 5: Solve for x
    x = 3,491,214,811.39/61,295.40
  6. Step 6: Final answer
    x = 56,957.21

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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.