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Finding the Fourth Proportional to 117,328.41, 161,912.43 and 63,613.26

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Solution

The fourth proportional to 117,328.41, 161,912.43 and 63,613.26 is: 87,785.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,328.41 : 161,912.43 = 63,613.26 : x
  2. Step 2: Convert to fraction form
    117,328.41/161,912.43 = 63,613.26/x
  3. Step 3: Cross multiply
    117,328.41x = 161,912.43 × 63,613.26
  4. Step 4: Simplify right side
    117,328.41x = 10,299,777,506.82
  5. Step 5: Solve for x
    x = 10,299,777,506.82/117,328.41
  6. Step 6: Final answer
    x = 87,785.88

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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.