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Finding the Fourth Proportional to 203,772.40, 305,658.60 and 56,028.40

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Solution

The fourth proportional to 203,772.40, 305,658.60 and 56,028.40 is: 84,042.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,772.40 : 305,658.60 = 56,028.40 : x
  2. Step 2: Convert to fraction form
    203,772.40/305,658.60 = 56,028.40/x
  3. Step 3: Cross multiply
    203,772.40x = 305,658.60 × 56,028.40
  4. Step 4: Simplify right side
    203,772.40x = 17,125,562,304.24
  5. Step 5: Solve for x
    x = 17,125,562,304.24/203,772.40
  6. Step 6: Final answer
    x = 84,042.60

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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.