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Finding the Fourth Proportional to 136,672.80, 205,009.20 and 132,080.10

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Solution

The fourth proportional to 136,672.80, 205,009.20 and 132,080.10 is: 198,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,672.80 : 205,009.20 = 132,080.10 : x
  2. Step 2: Convert to fraction form
    136,672.80/205,009.20 = 132,080.10/x
  3. Step 3: Cross multiply
    136,672.80x = 205,009.20 × 132,080.10
  4. Step 4: Simplify right side
    136,672.80x = 27,077,635,636.92
  5. Step 5: Solve for x
    x = 27,077,635,636.92/136,672.80
  6. Step 6: Final answer
    x = 198,120.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.