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Finding the Fourth Proportional to 206,792.74, 309,968.56 and 117,854.74

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Solution

The fourth proportional to 206,792.74, 309,968.56 and 117,854.74 is: 176,656.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,792.74 : 309,968.56 = 117,854.74 : x
  2. Step 2: Convert to fraction form
    206,792.74/309,968.56 = 117,854.74/x
  3. Step 3: Cross multiply
    206,792.74x = 309,968.56 × 117,854.74
  4. Step 4: Simplify right side
    206,792.74x = 36,531,264,046.97
  5. Step 5: Solve for x
    x = 36,531,264,046.97/206,792.74
  6. Step 6: Final answer
    x = 176,656.41

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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.