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Finding the Fourth Proportional to 136,703.54, 188,663.92 and 82,976.24

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Solution

The fourth proportional to 136,703.54, 188,663.92 and 82,976.24 is: 114,515.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,703.54 : 188,663.92 = 82,976.24 : x
  2. Step 2: Convert to fraction form
    136,703.54/188,663.92 = 82,976.24/x
  3. Step 3: Cross multiply
    136,703.54x = 188,663.92 × 82,976.24
  4. Step 4: Simplify right side
    136,703.54x = 15,654,622,705.26
  5. Step 5: Solve for x
    x = 15,654,622,705.26/136,703.54
  6. Step 6: Final answer
    x = 114,515.12

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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.