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Finding the Fourth Proportional to 74,160.56, 111,240.76 and 29,787.32

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Solution

The fourth proportional to 74,160.56, 111,240.76 and 29,787.32 is: 44,680.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,160.56 : 111,240.76 = 29,787.32 : x
  2. Step 2: Convert to fraction form
    74,160.56/111,240.76 = 29,787.32/x
  3. Step 3: Cross multiply
    74,160.56x = 111,240.76 × 29,787.32
  4. Step 4: Simplify right side
    74,160.56x = 3,313,563,410.02
  5. Step 5: Solve for x
    x = 3,313,563,410.02/74,160.56
  6. Step 6: Final answer
    x = 44,680.94

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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.