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Finding the Fourth Proportional to 178,959.21, 246,964.56 and 98,391.95

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Solution

The fourth proportional to 178,959.21, 246,964.56 and 98,391.95 is: 135,781.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,959.21 : 246,964.56 = 98,391.95 : x
  2. Step 2: Convert to fraction form
    178,959.21/246,964.56 = 98,391.95/x
  3. Step 3: Cross multiply
    178,959.21x = 246,964.56 × 98,391.95
  4. Step 4: Simplify right side
    178,959.21x = 24,299,324,639.29
  5. Step 5: Solve for x
    x = 24,299,324,639.29/178,959.21
  6. Step 6: Final answer
    x = 135,781.36

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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.