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Finding the Fourth Proportional to 66,967.92, 92,415.90 and 36,753.48

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Solution

The fourth proportional to 66,967.92, 92,415.90 and 36,753.48 is: 50,719.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,967.92 : 92,415.90 = 36,753.48 : x
  2. Step 2: Convert to fraction form
    66,967.92/92,415.90 = 36,753.48/x
  3. Step 3: Cross multiply
    66,967.92x = 92,415.90 × 36,753.48
  4. Step 4: Simplify right side
    66,967.92x = 3,396,605,932.33
  5. Step 5: Solve for x
    x = 3,396,605,932.33/66,967.92
  6. Step 6: Final answer
    x = 50,719.90

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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.