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Finding the Fourth Proportional to 283,800.15, 391,647.26 and 154,737.56

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Solution

The fourth proportional to 283,800.15, 391,647.26 and 154,737.56 is: 213,539.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,800.15 : 391,647.26 = 154,737.56 : x
  2. Step 2: Convert to fraction form
    283,800.15/391,647.26 = 154,737.56/x
  3. Step 3: Cross multiply
    283,800.15x = 391,647.26 × 154,737.56
  4. Step 4: Simplify right side
    283,800.15x = 60,602,542,759.05
  5. Step 5: Solve for x
    x = 60,602,542,759.05/283,800.15
  6. Step 6: Final answer
    x = 213,539.50

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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.