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Finding the Fourth Proportional to 52,915.72, 73,025.78 and 29,043.20

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Solution

The fourth proportional to 52,915.72, 73,025.78 and 29,043.20 is: 40,080.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,915.72 : 73,025.78 = 29,043.20 : x
  2. Step 2: Convert to fraction form
    52,915.72/73,025.78 = 29,043.20/x
  3. Step 3: Cross multiply
    52,915.72x = 73,025.78 × 29,043.20
  4. Step 4: Simplify right side
    52,915.72x = 2,120,902,333.70
  5. Step 5: Solve for x
    x = 2,120,902,333.70/52,915.72
  6. Step 6: Final answer
    x = 40,080.76

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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.