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Finding the Fourth Proportional to 117,912.56, 176,764.32 and 84,548.66

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Solution

The fourth proportional to 117,912.56, 176,764.32 and 84,548.66 is: 126,748.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,912.56 : 176,764.32 = 84,548.66 : x
  2. Step 2: Convert to fraction form
    117,912.56/176,764.32 = 84,548.66/x
  3. Step 3: Cross multiply
    117,912.56x = 176,764.32 × 84,548.66
  4. Step 4: Simplify right side
    117,912.56x = 14,945,185,507.99
  5. Step 5: Solve for x
    x = 14,945,185,507.99/117,912.56
  6. Step 6: Final answer
    x = 126,748.04

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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.