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Finding the Fourth Proportional to 206,962.88, 285,825.64 and 142,599.48

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Solution

The fourth proportional to 206,962.88, 285,825.64 and 142,599.48 is: 196,936.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,962.88 : 285,825.64 = 142,599.48 : x
  2. Step 2: Convert to fraction form
    206,962.88/285,825.64 = 142,599.48/x
  3. Step 3: Cross multiply
    206,962.88x = 285,825.64 × 142,599.48
  4. Step 4: Simplify right side
    206,962.88x = 40,758,587,634.67
  5. Step 5: Solve for x
    x = 40,758,587,634.67/206,962.88
  6. Step 6: Final answer
    x = 196,936.70

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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.