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Finding the Fourth Proportional to 192,859.40, 289,332.72 and 104,111

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Solution

The fourth proportional to 192,859.40, 289,332.72 and 104,111 is: 156,190.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,859.40 : 289,332.72 = 104,111 : x
  2. Step 2: Convert to fraction form
    192,859.40/289,332.72 = 104,111/x
  3. Step 3: Cross multiply
    192,859.40x = 289,332.72 × 104,111
  4. Step 4: Simplify right side
    192,859.40x = 30,122,718,811.92
  5. Step 5: Solve for x
    x = 30,122,718,811.92/192,859.40
  6. Step 6: Final answer
    x = 156,190.05

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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.