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Finding the Fourth Proportional to 117,291.86, 161,858.81 and 69,516.84

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Solution

The fourth proportional to 117,291.86, 161,858.81 and 69,516.84 is: 95,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,291.86 : 161,858.81 = 69,516.84 : x
  2. Step 2: Convert to fraction form
    117,291.86/161,858.81 = 69,516.84/x
  3. Step 3: Cross multiply
    117,291.86x = 161,858.81 × 69,516.84
  4. Step 4: Simplify right side
    117,291.86x = 11,251,913,171.15
  5. Step 5: Solve for x
    x = 11,251,913,171.15/117,291.86
  6. Step 6: Final answer
    x = 95,930.90

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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.