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Finding the Fourth Proportional to 543,239.60, 814,586.02 and 188,158.28

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Solution

The fourth proportional to 543,239.60, 814,586.02 and 188,158.28 is: 282,142.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,239.60 : 814,586.02 = 188,158.28 : x
  2. Step 2: Convert to fraction form
    543,239.60/814,586.02 = 188,158.28/x
  3. Step 3: Cross multiply
    543,239.60x = 814,586.02 × 188,158.28
  4. Step 4: Simplify right side
    543,239.60x = 153,271,099,891.92
  5. Step 5: Solve for x
    x = 153,271,099,891.92/543,239.60
  6. Step 6: Final answer
    x = 282,142.73

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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.