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Finding the Fourth Proportional to 112,553.45, 168,787.80 and 45,957.93

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Solution

The fourth proportional to 112,553.45, 168,787.80 and 45,957.93 is: 68,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,553.45 : 168,787.80 = 45,957.93 : x
  2. Step 2: Convert to fraction form
    112,553.45/168,787.80 = 45,957.93/x
  3. Step 3: Cross multiply
    112,553.45x = 168,787.80 × 45,957.93
  4. Step 4: Simplify right side
    112,553.45x = 7,757,138,213.73
  5. Step 5: Solve for x
    x = 7,757,138,213.73/112,553.45
  6. Step 6: Final answer
    x = 68,919.60

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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.