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Finding the Fourth Proportional to 627,393.85, 865,808.70 and 340,913.94

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Solution

The fourth proportional to 627,393.85, 865,808.70 and 340,913.94 is: 470,464.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,393.85 : 865,808.70 = 340,913.94 : x
  2. Step 2: Convert to fraction form
    627,393.85/865,808.70 = 340,913.94/x
  3. Step 3: Cross multiply
    627,393.85x = 865,808.70 × 340,913.94
  4. Step 4: Simplify right side
    627,393.85x = 295,166,255,203.28
  5. Step 5: Solve for x
    x = 295,166,255,203.28/627,393.85
  6. Step 6: Final answer
    x = 470,464.06

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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.