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Finding the Fourth Proportional to 29,676.88, 40,937.16 and 21,180.88

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Solution

The fourth proportional to 29,676.88, 40,937.16 and 21,180.88 is: 29,217.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,676.88 : 40,937.16 = 21,180.88 : x
  2. Step 2: Convert to fraction form
    29,676.88/40,937.16 = 21,180.88/x
  3. Step 3: Cross multiply
    29,676.88x = 40,937.16 × 21,180.88
  4. Step 4: Simplify right side
    29,676.88x = 867,085,073.50
  5. Step 5: Solve for x
    x = 867,085,073.50/29,676.88
  6. Step 6: Final answer
    x = 29,217.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.