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Finding the Fourth Proportional to 283,954.89, 391,865.15 and 154,895.54

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Solution

The fourth proportional to 283,954.89, 391,865.15 and 154,895.54 is: 213,759.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,954.89 : 391,865.15 = 154,895.54 : x
  2. Step 2: Convert to fraction form
    283,954.89/391,865.15 = 154,895.54/x
  3. Step 3: Cross multiply
    283,954.89x = 391,865.15 × 154,895.54
  4. Step 4: Simplify right side
    283,954.89x = 60,698,161,282.63
  5. Step 5: Solve for x
    x = 60,698,161,282.63/283,954.89
  6. Step 6: Final answer
    x = 213,759.87

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1.5x scale

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.