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Finding the Fourth Proportional to 363,633.12, 501,813.60 and 212,759.28

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Solution

The fourth proportional to 363,633.12, 501,813.60 and 212,759.28 is: 293,607.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,633.12 : 501,813.60 = 212,759.28 : x
  2. Step 2: Convert to fraction form
    363,633.12/501,813.60 = 212,759.28/x
  3. Step 3: Cross multiply
    363,633.12x = 501,813.60 × 212,759.28
  4. Step 4: Simplify right side
    363,633.12x = 106,765,500,230.21
  5. Step 5: Solve for x
    x = 106,765,500,230.21/363,633.12
  6. Step 6: Final answer
    x = 293,607.74

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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.