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Finding the Fourth Proportional to 117,137.54, 161,649.56 and 63,422.60

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Solution

The fourth proportional to 117,137.54, 161,649.56 and 63,422.60 is: 87,523.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,137.54 : 161,649.56 = 63,422.60 : x
  2. Step 2: Convert to fraction form
    117,137.54/161,649.56 = 63,422.60/x
  3. Step 3: Cross multiply
    117,137.54x = 161,649.56 × 63,422.60
  4. Step 4: Simplify right side
    117,137.54x = 10,252,235,384.06
  5. Step 5: Solve for x
    x = 10,252,235,384.06/117,137.54
  6. Step 6: Final answer
    x = 87,523.06

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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.