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Finding the Fourth Proportional to 443,161.82, 611,491.20 and 261,848.54

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Solution

The fourth proportional to 443,161.82, 611,491.20 and 261,848.54 is: 361,308.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,161.82 : 611,491.20 = 261,848.54 : x
  2. Step 2: Convert to fraction form
    443,161.82/611,491.20 = 261,848.54/x
  3. Step 3: Cross multiply
    443,161.82x = 611,491.20 × 261,848.54
  4. Step 4: Simplify right side
    443,161.82x = 160,118,077,942.85
  5. Step 5: Solve for x
    x = 160,118,077,942.85/443,161.82
  6. Step 6: Final answer
    x = 361,308.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.