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Finding the Fourth Proportional to 443,536.11, 665,309.03 and 127,995.75

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Solution

The fourth proportional to 443,536.11, 665,309.03 and 127,995.75 is: 191,995.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,536.11 : 665,309.03 = 127,995.75 : x
  2. Step 2: Convert to fraction form
    443,536.11/665,309.03 = 127,995.75/x
  3. Step 3: Cross multiply
    443,536.11x = 665,309.03 × 127,995.75
  4. Step 4: Simplify right side
    443,536.11x = 85,156,727,636.64
  5. Step 5: Solve for x
    x = 85,156,727,636.64/443,536.11
  6. Step 6: Final answer
    x = 191,995.03

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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.