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Finding the Fourth Proportional to 49,872.99, 68,762.48 and 31,938.51

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Solution

The fourth proportional to 49,872.99, 68,762.48 and 31,938.51 is: 44,035.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,872.99 : 68,762.48 = 31,938.51 : x
  2. Step 2: Convert to fraction form
    49,872.99/68,762.48 = 31,938.51/x
  3. Step 3: Cross multiply
    49,872.99x = 68,762.48 × 31,938.51
  4. Step 4: Simplify right side
    49,872.99x = 2,196,170,995.41
  5. Step 5: Solve for x
    x = 2,196,170,995.41/49,872.99
  6. Step 6: Final answer
    x = 44,035.28

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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.