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Finding the Fourth Proportional to 192,658.20, 265,961.12 and 128,234.64

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Solution

The fourth proportional to 192,658.20, 265,961.12 and 128,234.64 is: 177,025.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,658.20 : 265,961.12 = 128,234.64 : x
  2. Step 2: Convert to fraction form
    192,658.20/265,961.12 = 128,234.64/x
  3. Step 3: Cross multiply
    192,658.20x = 265,961.12 × 128,234.64
  4. Step 4: Simplify right side
    192,658.20x = 34,105,428,477.20
  5. Step 5: Solve for x
    x = 34,105,428,477.20/192,658.20
  6. Step 6: Final answer
    x = 177,025.57

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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.