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Finding the Fourth Proportional to 627,781.07, 866,299.07 and 352,123.76

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Solution

The fourth proportional to 627,781.07, 866,299.07 and 352,123.76 is: 485,909.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,781.07 : 866,299.07 = 352,123.76 : x
  2. Step 2: Convert to fraction form
    627,781.07/866,299.07 = 352,123.76/x
  3. Step 3: Cross multiply
    627,781.07x = 866,299.07 × 352,123.76
  4. Step 4: Simplify right side
    627,781.07x = 305,044,488,858.96
  5. Step 5: Solve for x
    x = 305,044,488,858.96/627,781.07
  6. Step 6: Final answer
    x = 485,909.03

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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.