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Finding the Fourth Proportional to 400,855.04, 601,337.78 and 134,691.60

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Solution

The fourth proportional to 400,855.04, 601,337.78 and 134,691.60 is: 202,055.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,855.04 : 601,337.78 = 134,691.60 : x
  2. Step 2: Convert to fraction form
    400,855.04/601,337.78 = 134,691.60/x
  3. Step 3: Cross multiply
    400,855.04x = 601,337.78 × 134,691.60
  4. Step 4: Simplify right side
    400,855.04x = 80,995,147,728.65
  5. Step 5: Solve for x
    x = 80,995,147,728.65/400,855.04
  6. Step 6: Final answer
    x = 202,055.95

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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.