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Finding the Fourth Proportional to 640,696.06, 884,179.02 and 354,234.64

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Solution

The fourth proportional to 640,696.06, 884,179.02 and 354,234.64 is: 488,854.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,696.06 : 884,179.02 = 354,234.64 : x
  2. Step 2: Convert to fraction form
    640,696.06/884,179.02 = 354,234.64/x
  3. Step 3: Cross multiply
    640,696.06x = 884,179.02 × 354,234.64
  4. Step 4: Simplify right side
    640,696.06x = 313,206,836,845.25
  5. Step 5: Solve for x
    x = 313,206,836,845.25/640,696.06
  6. Step 6: Final answer
    x = 488,854.01

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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.