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Finding the Fourth Proportional to 443,325.80, 664,926.35 and 143,809.01

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Solution

The fourth proportional to 443,325.80, 664,926.35 and 143,809.01 is: 215,693.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,325.80 : 664,926.35 = 143,809.01 : x
  2. Step 2: Convert to fraction form
    443,325.80/664,926.35 = 143,809.01/x
  3. Step 3: Cross multiply
    443,325.80x = 664,926.35 × 143,809.01
  4. Step 4: Simplify right side
    443,325.80x = 95,622,399,105.49
  5. Step 5: Solve for x
    x = 95,622,399,105.49/443,325.80
  6. Step 6: Final answer
    x = 215,693.29

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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.