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Finding the Fourth Proportional to 139,504.87, 192,191.29 and 96,989.59

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Solution

The fourth proportional to 139,504.87, 192,191.29 and 96,989.59 is: 133,619.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,504.87 : 192,191.29 = 96,989.59 : x
  2. Step 2: Convert to fraction form
    139,504.87/192,191.29 = 96,989.59/x
  3. Step 3: Cross multiply
    139,504.87x = 192,191.29 × 96,989.59
  4. Step 4: Simplify right side
    139,504.87x = 18,640,554,418.67
  5. Step 5: Solve for x
    x = 18,640,554,418.67/139,504.87
  6. Step 6: Final answer
    x = 133,619.38

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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.