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Finding the Fourth Proportional to 40,792.84, 61,057.92 and 21,044.20

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Solution

The fourth proportional to 40,792.84, 61,057.92 and 21,044.20 is: 31,498.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,792.84 : 61,057.92 = 21,044.20 : x
  2. Step 2: Convert to fraction form
    40,792.84/61,057.92 = 21,044.20/x
  3. Step 3: Cross multiply
    40,792.84x = 61,057.92 × 21,044.20
  4. Step 4: Simplify right side
    40,792.84x = 1,284,915,080.06
  5. Step 5: Solve for x
    x = 1,284,915,080.06/40,792.84
  6. Step 6: Final answer
    x = 31,498.54

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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.