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Finding the Fourth Proportional to 278,958.48, 418,414 and 110,433

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Solution

The fourth proportional to 278,958.48, 418,414 and 110,433 is: 165,640.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,958.48 : 418,414 = 110,433 : x
  2. Step 2: Convert to fraction form
    278,958.48/418,414 = 110,433/x
  3. Step 3: Cross multiply
    278,958.48x = 418,414 × 110,433
  4. Step 4: Simplify right side
    278,958.48x = 46,206,713,262
  5. Step 5: Solve for x
    x = 46,206,713,262/278,958.48
  6. Step 6: Final answer
    x = 165,640.11

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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.