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Finding the Fourth Proportional to 117,074.56, 161,565.36 and 69,310.48

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Solution

The fourth proportional to 117,074.56, 161,565.36 and 69,310.48 is: 95,649.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,074.56 : 161,565.36 = 69,310.48 : x
  2. Step 2: Convert to fraction form
    117,074.56/161,565.36 = 69,310.48/x
  3. Step 3: Cross multiply
    117,074.56x = 161,565.36 × 69,310.48
  4. Step 4: Simplify right side
    117,074.56x = 11,198,172,652.97
  5. Step 5: Solve for x
    x = 11,198,172,652.97/117,074.56
  6. Step 6: Final answer
    x = 95,649.92

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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.