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Finding the Fourth Proportional to 543,059.37, 815,184.98 and 431,456.97

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Solution

The fourth proportional to 543,059.37, 815,184.98 and 431,456.97 is: 647,658.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,059.37 : 815,184.98 = 431,456.97 : x
  2. Step 2: Convert to fraction form
    543,059.37/815,184.98 = 431,456.97/x
  3. Step 3: Cross multiply
    543,059.37x = 815,184.98 × 431,456.97
  4. Step 4: Simplify right side
    543,059.37x = 351,717,239,303.03
  5. Step 5: Solve for x
    x = 351,717,239,303.03/543,059.37
  6. Step 6: Final answer
    x = 647,658.91

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1.5x scale

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.