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Finding the Fourth Proportional to 269,203.20, 403,318.80 and 156,791.40

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Solution

The fourth proportional to 269,203.20, 403,318.80 and 156,791.40 is: 234,904.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,203.20 : 403,318.80 = 156,791.40 : x
  2. Step 2: Convert to fraction form
    269,203.20/403,318.80 = 156,791.40/x
  3. Step 3: Cross multiply
    269,203.20x = 403,318.80 × 156,791.40
  4. Step 4: Simplify right side
    269,203.20x = 63,236,919,298.32
  5. Step 5: Solve for x
    x = 63,236,919,298.32/269,203.20
  6. Step 6: Final answer
    x = 234,904.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.