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Finding the Fourth Proportional to 283,874, 391,744.99 and 154,812.18

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Solution

The fourth proportional to 283,874, 391,744.99 and 154,812.18 is: 213,640.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,874 : 391,744.99 = 154,812.18 : x
  2. Step 2: Convert to fraction form
    283,874/391,744.99 = 154,812.18/x
  3. Step 3: Cross multiply
    283,874x = 391,744.99 × 154,812.18
  4. Step 4: Simplify right side
    283,874x = 60,646,895,905.98
  5. Step 5: Solve for x
    x = 60,646,895,905.98/283,874
  6. Step 6: Final answer
    x = 213,640.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.