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Finding the Fourth Proportional to 443,329.01, 665,086.92 and 143,786.25

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Solution

The fourth proportional to 443,329.01, 665,086.92 and 143,786.25 is: 215,709.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,329.01 : 665,086.92 = 143,786.25 : x
  2. Step 2: Convert to fraction form
    443,329.01/665,086.92 = 143,786.25/x
  3. Step 3: Cross multiply
    443,329.01x = 665,086.92 × 143,786.25
  4. Step 4: Simplify right side
    443,329.01x = 95,630,350,106.48
  5. Step 5: Solve for x
    x = 95,630,350,106.48/443,329.01
  6. Step 6: Final answer
    x = 215,709.66

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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.