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Finding the Fourth Proportional to 627,391.73, 865,798.95 and 340,911.83

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Solution

The fourth proportional to 627,391.73, 865,798.95 and 340,911.83 is: 470,457.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,391.73 : 865,798.95 = 340,911.83 : x
  2. Step 2: Convert to fraction form
    627,391.73/865,798.95 = 340,911.83/x
  3. Step 3: Cross multiply
    627,391.73x = 865,798.95 × 340,911.83
  4. Step 4: Simplify right side
    627,391.73x = 295,161,104,456.58
  5. Step 5: Solve for x
    x = 295,161,104,456.58/627,391.73
  6. Step 6: Final answer
    x = 470,457.44

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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.