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Finding the Fourth Proportional to 67,796.30, 101,693.36 and 21,049.22

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Solution

The fourth proportional to 67,796.30, 101,693.36 and 21,049.22 is: 31,573.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,796.30 : 101,693.36 = 21,049.22 : x
  2. Step 2: Convert to fraction form
    67,796.30/101,693.36 = 21,049.22/x
  3. Step 3: Cross multiply
    67,796.30x = 101,693.36 × 21,049.22
  4. Step 4: Simplify right side
    67,796.30x = 2,140,565,907.18
  5. Step 5: Solve for x
    x = 2,140,565,907.18/67,796.30
  6. Step 6: Final answer
    x = 31,573.49

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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.