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Finding the Fourth Proportional to 116,960.88, 161,396.20 and 69,205.86

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Solution

The fourth proportional to 116,960.88, 161,396.20 and 69,205.86 is: 95,498.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,960.88 : 161,396.20 = 69,205.86 : x
  2. Step 2: Convert to fraction form
    116,960.88/161,396.20 = 69,205.86/x
  3. Step 3: Cross multiply
    116,960.88x = 161,396.20 × 69,205.86
  4. Step 4: Simplify right side
    116,960.88x = 11,169,561,841.74
  5. Step 5: Solve for x
    x = 11,169,561,841.74/116,960.88
  6. Step 6: Final answer
    x = 95,498.28

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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.