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Finding the Fourth Proportional to 192,718.46, 265,919.72 and 121,047.42

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Solution

The fourth proportional to 192,718.46, 265,919.72 and 121,047.42 is: 167,025.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,718.46 : 265,919.72 = 121,047.42 : x
  2. Step 2: Convert to fraction form
    192,718.46/265,919.72 = 121,047.42/x
  3. Step 3: Cross multiply
    192,718.46x = 265,919.72 × 121,047.42
  4. Step 4: Simplify right side
    192,718.46x = 32,188,896,033.12
  5. Step 5: Solve for x
    x = 32,188,896,033.12/192,718.46
  6. Step 6: Final answer
    x = 167,025.49

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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.