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Finding the Fourth Proportional to 117,233.53, 161,774.61 and 74,787.50

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Solution

The fourth proportional to 117,233.53, 161,774.61 and 74,787.50 is: 103,201.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,233.53 : 161,774.61 = 74,787.50 : x
  2. Step 2: Convert to fraction form
    117,233.53/161,774.61 = 74,787.50/x
  3. Step 3: Cross multiply
    117,233.53x = 161,774.61 × 74,787.50
  4. Step 4: Simplify right side
    117,233.53x = 12,098,718,645.38
  5. Step 5: Solve for x
    x = 12,098,718,645.38/117,233.53
  6. Step 6: Final answer
    x = 103,201.86

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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.