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Finding the Fourth Proportional to 700,633.17, 966,876.74 and 394,713.21

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Solution

The fourth proportional to 700,633.17, 966,876.74 and 394,713.21 is: 544,705.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,633.17 : 966,876.74 = 394,713.21 : x
  2. Step 2: Convert to fraction form
    700,633.17/966,876.74 = 394,713.21/x
  3. Step 3: Cross multiply
    700,633.17x = 966,876.74 × 394,713.21
  4. Step 4: Simplify right side
    700,633.17x = 381,639,022,706.52
  5. Step 5: Solve for x
    x = 381,639,022,706.52/700,633.17
  6. Step 6: Final answer
    x = 544,705.90

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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.