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Finding the Fourth Proportional to 443,404.35, 665,204.81 and 127,836.63

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Solution

The fourth proportional to 443,404.35, 665,204.81 and 127,836.63 is: 191,783.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,404.35 : 665,204.81 = 127,836.63 : x
  2. Step 2: Convert to fraction form
    443,404.35/665,204.81 = 127,836.63/x
  3. Step 3: Cross multiply
    443,404.35x = 665,204.81 × 127,836.63
  4. Step 4: Simplify right side
    443,404.35x = 85,037,540,531.01
  5. Step 5: Solve for x
    x = 85,037,540,531.01/443,404.35
  6. Step 6: Final answer
    x = 191,783.28

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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.