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Finding the Fourth Proportional to 120,753, 166,632.66 and 69,764.04

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Solution

The fourth proportional to 120,753, 166,632.66 and 69,764.04 is: 96,270.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,753 : 166,632.66 = 69,764.04 : x
  2. Step 2: Convert to fraction form
    120,753/166,632.66 = 69,764.04/x
  3. Step 3: Cross multiply
    120,753x = 166,632.66 × 69,764.04
  4. Step 4: Simplify right side
    120,753x = 11,624,967,557.55
  5. Step 5: Solve for x
    x = 11,624,967,557.55/120,753
  6. Step 6: Final answer
    x = 96,270.63

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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.