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Finding the Fourth Proportional to 443,260.80, 611,668.80 and 261,964.80

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Solution

The fourth proportional to 443,260.80, 611,668.80 and 261,964.80 is: 361,493.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,260.80 : 611,668.80 = 261,964.80 : x
  2. Step 2: Convert to fraction form
    443,260.80/611,668.80 = 261,964.80/x
  3. Step 3: Cross multiply
    443,260.80x = 611,668.80 × 261,964.80
  4. Step 4: Simplify right side
    443,260.80x = 160,235,694,858.24
  5. Step 5: Solve for x
    x = 160,235,694,858.24/443,260.80
  6. Step 6: Final answer
    x = 361,493.04

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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.