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Finding the Fourth Proportional to 112,351.70, 168,428.82 and 45,847.82

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Solution

The fourth proportional to 112,351.70, 168,428.82 and 45,847.82 is: 68,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,351.70 : 168,428.82 = 45,847.82 : x
  2. Step 2: Convert to fraction form
    112,351.70/168,428.82 = 45,847.82/x
  3. Step 3: Cross multiply
    112,351.70x = 168,428.82 × 45,847.82
  4. Step 4: Simplify right side
    112,351.70x = 7,722,094,222.17
  5. Step 5: Solve for x
    x = 7,722,094,222.17/112,351.70
  6. Step 6: Final answer
    x = 68,731.44

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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.