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Finding the Fourth Proportional to 106,401.09, 146,843.87 and 79,496.90

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Solution

The fourth proportional to 106,401.09, 146,843.87 and 79,496.90 is: 109,713.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,401.09 : 146,843.87 = 79,496.90 : x
  2. Step 2: Convert to fraction form
    106,401.09/146,843.87 = 79,496.90/x
  3. Step 3: Cross multiply
    106,401.09x = 146,843.87 × 79,496.90
  4. Step 4: Simplify right side
    106,401.09x = 11,673,631,317.30
  5. Step 5: Solve for x
    x = 11,673,631,317.30/106,401.09
  6. Step 6: Final answer
    x = 109,713.46

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1.5x scale

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.