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Finding the Fourth Proportional to 122,949.66, 169,668.86 and 69,239.94

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Solution

The fourth proportional to 122,949.66, 169,668.86 and 69,239.94 is: 95,550.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,949.66 : 169,668.86 = 69,239.94 : x
  2. Step 2: Convert to fraction form
    122,949.66/169,668.86 = 69,239.94/x
  3. Step 3: Cross multiply
    122,949.66x = 169,668.86 × 69,239.94
  4. Step 4: Simplify right side
    122,949.66x = 11,747,861,686.27
  5. Step 5: Solve for x
    x = 11,747,861,686.27/122,949.66
  6. Step 6: Final answer
    x = 95,550.18

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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.