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Finding the Fourth Proportional to 106,787.92, 147,361.38 and 59,038.48

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Solution

The fourth proportional to 106,787.92, 147,361.38 and 59,038.48 is: 81,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,787.92 : 147,361.38 = 59,038.48 : x
  2. Step 2: Convert to fraction form
    106,787.92/147,361.38 = 59,038.48/x
  3. Step 3: Cross multiply
    106,787.92x = 147,361.38 × 59,038.48
  4. Step 4: Simplify right side
    106,787.92x = 8,699,991,885.90
  5. Step 5: Solve for x
    x = 8,699,991,885.90/106,787.92
  6. Step 6: Final answer
    x = 81,469.81

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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.