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Finding the Fourth Proportional to 609,179.28, 840,755.34 and 351,006.78

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Solution

The fourth proportional to 609,179.28, 840,755.34 and 351,006.78 is: 484,440.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,179.28 : 840,755.34 = 351,006.78 : x
  2. Step 2: Convert to fraction form
    609,179.28/840,755.34 = 351,006.78/x
  3. Step 3: Cross multiply
    609,179.28x = 840,755.34 × 351,006.78
  4. Step 4: Simplify right side
    609,179.28x = 295,110,824,661.21
  5. Step 5: Solve for x
    x = 295,110,824,661.21/609,179.28
  6. Step 6: Final answer
    x = 484,440.02

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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.