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Finding the Fourth Proportional to 49,578.70, 68,360.80 and 36,981.58

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Solution

The fourth proportional to 49,578.70, 68,360.80 and 36,981.58 is: 50,991.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,578.70 : 68,360.80 = 36,981.58 : x
  2. Step 2: Convert to fraction form
    49,578.70/68,360.80 = 36,981.58/x
  3. Step 3: Cross multiply
    49,578.70x = 68,360.80 × 36,981.58
  4. Step 4: Simplify right side
    49,578.70x = 2,528,090,394.06
  5. Step 5: Solve for x
    x = 2,528,090,394.06/49,578.70
  6. Step 6: Final answer
    x = 50,991.46

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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.