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Finding the Fourth Proportional to 139,222.68, 192,125.70 and 75,560.52

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Solution

The fourth proportional to 139,222.68, 192,125.70 and 75,560.52 is: 104,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,222.68 : 192,125.70 = 75,560.52 : x
  2. Step 2: Convert to fraction form
    139,222.68/192,125.70 = 75,560.52/x
  3. Step 3: Cross multiply
    139,222.68x = 192,125.70 × 75,560.52
  4. Step 4: Simplify right side
    139,222.68x = 14,517,117,797.36
  5. Step 5: Solve for x
    x = 14,517,117,797.36/139,222.68
  6. Step 6: Final answer
    x = 104,272.65

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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.