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Finding the Fourth Proportional to 168,053.10, 252,079.65 and 120,813.90

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Solution

The fourth proportional to 168,053.10, 252,079.65 and 120,813.90 is: 181,220.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,053.10 : 252,079.65 = 120,813.90 : x
  2. Step 2: Convert to fraction form
    168,053.10/252,079.65 = 120,813.90/x
  3. Step 3: Cross multiply
    168,053.10x = 252,079.65 × 120,813.90
  4. Step 4: Simplify right side
    168,053.10x = 30,454,725,627.14
  5. Step 5: Solve for x
    x = 30,454,725,627.14/168,053.10
  6. Step 6: Final answer
    x = 181,220.85

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