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Finding the Fourth Proportional to 45,348.50, 68,026.67 and 12,516.50

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Solution

The fourth proportional to 45,348.50, 68,026.67 and 12,516.50 is: 18,775.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,348.50 : 68,026.67 = 12,516.50 : x
  2. Step 2: Convert to fraction form
    45,348.50/68,026.67 = 12,516.50/x
  3. Step 3: Cross multiply
    45,348.50x = 68,026.67 × 12,516.50
  4. Step 4: Simplify right side
    45,348.50x = 851,455,815.06
  5. Step 5: Solve for x
    x = 851,455,815.06/45,348.50
  6. Step 6: Final answer
    x = 18,775.83

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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.