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Finding the Fourth Proportional to 694,876.11, 958,919.90 and 393,070.11

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Solution

The fourth proportional to 694,876.11, 958,919.90 and 393,070.11 is: 542,431.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,876.11 : 958,919.90 = 393,070.11 : x
  2. Step 2: Convert to fraction form
    694,876.11/958,919.90 = 393,070.11/x
  3. Step 3: Cross multiply
    694,876.11x = 958,919.90 × 393,070.11
  4. Step 4: Simplify right side
    694,876.11x = 376,922,748,608.84
  5. Step 5: Solve for x
    x = 376,922,748,608.84/694,876.11
  6. Step 6: Final answer
    x = 542,431.58

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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.