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Finding the Fourth Proportional to 443,367.45, 611,627.85 and 261,991.62

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Solution

The fourth proportional to 443,367.45, 611,627.85 and 261,991.62 is: 361,418.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,367.45 : 611,627.85 = 261,991.62 : x
  2. Step 2: Convert to fraction form
    443,367.45/611,627.85 = 261,991.62/x
  3. Step 3: Cross multiply
    443,367.45x = 611,627.85 × 261,991.62
  4. Step 4: Simplify right side
    443,367.45x = 160,241,371,258.62
  5. Step 5: Solve for x
    x = 160,241,371,258.62/443,367.45
  6. Step 6: Final answer
    x = 361,418.89

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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.