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Finding the Fourth Proportional to 132,868.80, 199,303.20 and 125,611.20

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Solution

The fourth proportional to 132,868.80, 199,303.20 and 125,611.20 is: 188,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,868.80 : 199,303.20 = 125,611.20 : x
  2. Step 2: Convert to fraction form
    132,868.80/199,303.20 = 125,611.20/x
  3. Step 3: Cross multiply
    132,868.80x = 199,303.20 × 125,611.20
  4. Step 4: Simplify right side
    132,868.80x = 25,034,714,115.84
  5. Step 5: Solve for x
    x = 25,034,714,115.84/132,868.80
  6. Step 6: Final answer
    x = 188,416.80

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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.