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Finding the Fourth Proportional to 136,409.28, 188,254.28 and 82,696.56

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Solution

The fourth proportional to 136,409.28, 188,254.28 and 82,696.56 is: 114,127.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,409.28 : 188,254.28 = 82,696.56 : x
  2. Step 2: Convert to fraction form
    136,409.28/188,254.28 = 82,696.56/x
  3. Step 3: Cross multiply
    136,409.28x = 188,254.28 × 82,696.56
  4. Step 4: Simplify right side
    136,409.28x = 15,567,981,361.28
  5. Step 5: Solve for x
    x = 15,567,981,361.28/136,409.28
  6. Step 6: Final answer
    x = 114,127.00

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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.