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Finding the Fourth Proportional to 335,638.84, 503,241.30 and 143,638.62

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Solution

The fourth proportional to 335,638.84, 503,241.30 and 143,638.62 is: 215,365.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,638.84 : 503,241.30 = 143,638.62 : x
  2. Step 2: Convert to fraction form
    335,638.84/503,241.30 = 143,638.62/x
  3. Step 3: Cross multiply
    335,638.84x = 503,241.30 × 143,638.62
  4. Step 4: Simplify right side
    335,638.84x = 72,284,885,859.01
  5. Step 5: Solve for x
    x = 72,284,885,859.01/335,638.84
  6. Step 6: Final answer
    x = 215,365.08

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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.