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Finding the Fourth Proportional to 192,206.88, 265,105.44 and 128,432.88

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Solution

The fourth proportional to 192,206.88, 265,105.44 and 128,432.88 is: 177,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,206.88 : 265,105.44 = 128,432.88 : x
  2. Step 2: Convert to fraction form
    192,206.88/265,105.44 = 128,432.88/x
  3. Step 3: Cross multiply
    192,206.88x = 265,105.44 × 128,432.88
  4. Step 4: Simplify right side
    192,206.88x = 34,048,255,162.87
  5. Step 5: Solve for x
    x = 34,048,255,162.87/192,206.88
  6. Step 6: Final answer
    x = 177,143.79

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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.