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Finding the Fourth Proportional to 136,704.80, 205,057.20 and 134,400.80

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Solution

The fourth proportional to 136,704.80, 205,057.20 and 134,400.80 is: 201,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,704.80 : 205,057.20 = 134,400.80 : x
  2. Step 2: Convert to fraction form
    136,704.80/205,057.20 = 134,400.80/x
  3. Step 3: Cross multiply
    136,704.80x = 205,057.20 × 134,400.80
  4. Step 4: Simplify right side
    136,704.80x = 27,559,851,725.76
  5. Step 5: Solve for x
    x = 27,559,851,725.76/136,704.80
  6. Step 6: Final answer
    x = 201,601.20

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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.