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Finding the Fourth Proportional to 69,940.33, 96,488.76 and 48,731.90

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Solution

The fourth proportional to 69,940.33, 96,488.76 and 48,731.90 is: 67,229.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,940.33 : 96,488.76 = 48,731.90 : x
  2. Step 2: Convert to fraction form
    69,940.33/96,488.76 = 48,731.90/x
  3. Step 3: Cross multiply
    69,940.33x = 96,488.76 × 48,731.90
  4. Step 4: Simplify right side
    69,940.33x = 4,702,080,121.00
  5. Step 5: Solve for x
    x = 4,702,080,121.00/69,940.33
  6. Step 6: Final answer
    x = 67,229.88

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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.