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Finding the Fourth Proportional to 412,042.09, 618,158.99 and 127,717.56

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Solution

The fourth proportional to 412,042.09, 618,158.99 and 127,717.56 is: 191,606.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,042.09 : 618,158.99 = 127,717.56 : x
  2. Step 2: Convert to fraction form
    412,042.09/618,158.99 = 127,717.56/x
  3. Step 3: Cross multiply
    412,042.09x = 618,158.99 × 127,717.56
  4. Step 4: Simplify right side
    412,042.09x = 78,949,757,894.86
  5. Step 5: Solve for x
    x = 78,949,757,894.86/412,042.09
  6. Step 6: Final answer
    x = 191,606.05

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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.