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Finding the Fourth Proportional to 308,878.71, 463,209.48 and 92,672.97

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Solution

The fourth proportional to 308,878.71, 463,209.48 and 92,672.97 is: 138,976.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,878.71 : 463,209.48 = 92,672.97 : x
  2. Step 2: Convert to fraction form
    308,878.71/463,209.48 = 92,672.97/x
  3. Step 3: Cross multiply
    308,878.71x = 463,209.48 × 92,672.97
  4. Step 4: Simplify right side
    308,878.71x = 42,926,998,243.76
  5. Step 5: Solve for x
    x = 42,926,998,243.76/308,878.71
  6. Step 6: Final answer
    x = 138,976.88

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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.