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Finding the Fourth Proportional to 117,912.41, 162,713.76 and 64,197.31

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Solution

The fourth proportional to 117,912.41, 162,713.76 and 64,197.31 is: 88,589.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,912.41 : 162,713.76 = 64,197.31 : x
  2. Step 2: Convert to fraction form
    117,912.41/162,713.76 = 64,197.31/x
  3. Step 3: Cross multiply
    117,912.41x = 162,713.76 × 64,197.31
  4. Step 4: Simplify right side
    117,912.41x = 10,445,785,852.48
  5. Step 5: Solve for x
    x = 10,445,785,852.48/117,912.41
  6. Step 6: Final answer
    x = 88,589.37

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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.