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Finding the Fourth Proportional to 61,971.11, 85,520.68 and 33,676.80

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Solution

The fourth proportional to 61,971.11, 85,520.68 and 33,676.80 is: 46,474.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,971.11 : 85,520.68 = 33,676.80 : x
  2. Step 2: Convert to fraction form
    61,971.11/85,520.68 = 33,676.80/x
  3. Step 3: Cross multiply
    61,971.11x = 85,520.68 × 33,676.80
  4. Step 4: Simplify right side
    61,971.11x = 2,880,062,752.03
  5. Step 5: Solve for x
    x = 2,880,062,752.03/61,971.11
  6. Step 6: Final answer
    x = 46,474.28

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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.