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Finding the Fourth Proportional to 338,816.88, 508,039.68 and 156,249.51

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Solution

The fourth proportional to 338,816.88, 508,039.68 and 156,249.51 is: 234,288.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,816.88 : 508,039.68 = 156,249.51 : x
  2. Step 2: Convert to fraction form
    338,816.88/508,039.68 = 156,249.51/x
  3. Step 3: Cross multiply
    338,816.88x = 508,039.68 × 156,249.51
  4. Step 4: Simplify right side
    338,816.88x = 79,380,951,060.56
  5. Step 5: Solve for x
    x = 79,380,951,060.56/338,816.88
  6. Step 6: Final answer
    x = 234,288.65

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1.5x scale

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.