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Finding the Fourth Proportional to 647,796.84, 893,961 and 361,309.56

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Solution

The fourth proportional to 647,796.84, 893,961 and 361,309.56 is: 498,607.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,796.84 : 893,961 = 361,309.56 : x
  2. Step 2: Convert to fraction form
    647,796.84/893,961 = 361,309.56/x
  3. Step 3: Cross multiply
    647,796.84x = 893,961 × 361,309.56
  4. Step 4: Simplify right side
    647,796.84x = 322,996,655,567.16
  5. Step 5: Solve for x
    x = 322,996,655,567.16/647,796.84
  6. Step 6: Final answer
    x = 498,607.95

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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.