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Finding the Fourth Proportional to 139,325.96, 192,328.70 and 94,065.26

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Solution

The fourth proportional to 139,325.96, 192,328.70 and 94,065.26 is: 129,849.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,325.96 : 192,328.70 = 94,065.26 : x
  2. Step 2: Convert to fraction form
    139,325.96/192,328.70 = 94,065.26/x
  3. Step 3: Cross multiply
    139,325.96x = 192,328.70 × 94,065.26
  4. Step 4: Simplify right side
    139,325.96x = 18,091,449,170.96
  5. Step 5: Solve for x
    x = 18,091,449,170.96/139,325.96
  6. Step 6: Final answer
    x = 129,849.81

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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.