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Finding the Fourth Proportional to 443,343.22, 665,108.28 and 143,800.49

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Solution

The fourth proportional to 443,343.22, 665,108.28 and 143,800.49 is: 215,731.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,343.22 : 665,108.28 = 143,800.49 : x
  2. Step 2: Convert to fraction form
    443,343.22/665,108.28 = 143,800.49/x
  3. Step 3: Cross multiply
    443,343.22x = 665,108.28 × 143,800.49
  4. Step 4: Simplify right side
    443,343.22x = 95,642,896,567.06
  5. Step 5: Solve for x
    x = 95,642,896,567.06/443,343.22
  6. Step 6: Final answer
    x = 215,731.05

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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.