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Finding the Fourth Proportional to 367,718.80, 551,448.60 and 131,069.20

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Solution

The fourth proportional to 367,718.80, 551,448.60 and 131,069.20 is: 196,557.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,718.80 : 551,448.60 = 131,069.20 : x
  2. Step 2: Convert to fraction form
    367,718.80/551,448.60 = 131,069.20/x
  3. Step 3: Cross multiply
    367,718.80x = 551,448.60 × 131,069.20
  4. Step 4: Simplify right side
    367,718.80x = 72,277,926,843.12
  5. Step 5: Solve for x
    x = 72,277,926,843.12/367,718.80
  6. Step 6: Final answer
    x = 196,557.61

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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.