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Finding the Fourth Proportional to 117,469.65, 176,147.09 and 81,948.03

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Solution

The fourth proportional to 117,469.65, 176,147.09 and 81,948.03 is: 122,882.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,469.65 : 176,147.09 = 81,948.03 : x
  2. Step 2: Convert to fraction form
    117,469.65/176,147.09 = 81,948.03/x
  3. Step 3: Cross multiply
    117,469.65x = 176,147.09 × 81,948.03
  4. Step 4: Simplify right side
    117,469.65x = 14,434,906,605.99
  5. Step 5: Solve for x
    x = 14,434,906,605.99/117,469.65
  6. Step 6: Final answer
    x = 122,882.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.