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Finding the Fourth Proportional to 138,954.56, 191,823.41 and 93,093.17

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Solution

The fourth proportional to 138,954.56, 191,823.41 and 93,093.17 is: 128,512.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,954.56 : 191,823.41 = 93,093.17 : x
  2. Step 2: Convert to fraction form
    138,954.56/191,823.41 = 93,093.17/x
  3. Step 3: Cross multiply
    138,954.56x = 191,823.41 × 93,093.17
  4. Step 4: Simplify right side
    138,954.56x = 17,857,449,317.11
  5. Step 5: Solve for x
    x = 17,857,449,317.11/138,954.56
  6. Step 6: Final answer
    x = 128,512.87

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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.