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Finding the Fourth Proportional to 640,591.08, 884,016 and 354,111

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Solution

The fourth proportional to 640,591.08, 884,016 and 354,111 is: 488,673.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,591.08 : 884,016 = 354,111 : x
  2. Step 2: Convert to fraction form
    640,591.08/884,016 = 354,111/x
  3. Step 3: Cross multiply
    640,591.08x = 884,016 × 354,111
  4. Step 4: Simplify right side
    640,591.08x = 313,039,789,776
  5. Step 5: Solve for x
    x = 313,039,789,776/640,591.08
  6. Step 6: Final answer
    x = 488,673.35

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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.