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Finding the Fourth Proportional to 543,311.70, 814,967.55 and 188,361.60

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Solution

The fourth proportional to 543,311.70, 814,967.55 and 188,361.60 is: 282,542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,311.70 : 814,967.55 = 188,361.60 : x
  2. Step 2: Convert to fraction form
    543,311.70/814,967.55 = 188,361.60/x
  3. Step 3: Cross multiply
    543,311.70x = 814,967.55 × 188,361.60
  4. Step 4: Simplify right side
    543,311.70x = 153,508,591,666.08
  5. Step 5: Solve for x
    x = 153,508,591,666.08/543,311.70
  6. Step 6: Final answer
    x = 282,542.40

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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.