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Finding the Fourth Proportional to 67,795.30, 101,691.87 and 21,048.22

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Solution

The fourth proportional to 67,795.30, 101,691.87 and 21,048.22 is: 31,571.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,795.30 : 101,691.87 = 21,048.22 : x
  2. Step 2: Convert to fraction form
    67,795.30/101,691.87 = 21,048.22/x
  3. Step 3: Cross multiply
    67,795.30x = 101,691.87 × 21,048.22
  4. Step 4: Simplify right side
    67,795.30x = 2,140,432,851.97
  5. Step 5: Solve for x
    x = 2,140,432,851.97/67,795.30
  6. Step 6: Final answer
    x = 31,571.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.