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Finding the Fourth Proportional to 139,350.53, 192,334.41 and 91,608.32

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Solution

The fourth proportional to 139,350.53, 192,334.41 and 91,608.32 is: 126,439.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,350.53 : 192,334.41 = 91,608.32 : x
  2. Step 2: Convert to fraction form
    139,350.53/192,334.41 = 91,608.32/x
  3. Step 3: Cross multiply
    139,350.53x = 192,334.41 × 91,608.32
  4. Step 4: Simplify right side
    139,350.53x = 17,619,432,178.29
  5. Step 5: Solve for x
    x = 17,619,432,178.29/139,350.53
  6. Step 6: Final answer
    x = 126,439.65

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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.