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Finding the Fourth Proportional to 443,338.74, 665,101.63 and 143,796.06

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Solution

The fourth proportional to 443,338.74, 665,101.63 and 143,796.06 is: 215,724.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,338.74 : 665,101.63 = 143,796.06 : x
  2. Step 2: Convert to fraction form
    443,338.74/665,101.63 = 143,796.06/x
  3. Step 3: Cross multiply
    443,338.74x = 665,101.63 × 143,796.06
  4. Step 4: Simplify right side
    443,338.74x = 95,638,994,073.32
  5. Step 5: Solve for x
    x = 95,638,994,073.32/443,338.74
  6. Step 6: Final answer
    x = 215,724.42

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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.