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Finding the Fourth Proportional to 49,043.58, 67,685.13 and 28,906.94

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Solution

The fourth proportional to 49,043.58, 67,685.13 and 28,906.94 is: 39,894.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,043.58 : 67,685.13 = 28,906.94 : x
  2. Step 2: Convert to fraction form
    49,043.58/67,685.13 = 28,906.94/x
  3. Step 3: Cross multiply
    49,043.58x = 67,685.13 × 28,906.94
  4. Step 4: Simplify right side
    49,043.58x = 1,956,569,653.38
  5. Step 5: Solve for x
    x = 1,956,569,653.38/49,043.58
  6. Step 6: Final answer
    x = 39,894.51

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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.