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Finding the Fourth Proportional to 50,929.80, 76,401.90 and 15,865.80

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Solution

The fourth proportional to 50,929.80, 76,401.90 and 15,865.80 is: 23,800.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,929.80 : 76,401.90 = 15,865.80 : x
  2. Step 2: Convert to fraction form
    50,929.80/76,401.90 = 15,865.80/x
  3. Step 3: Cross multiply
    50,929.80x = 76,401.90 × 15,865.80
  4. Step 4: Simplify right side
    50,929.80x = 1,212,177,265.02
  5. Step 5: Solve for x
    x = 1,212,177,265.02/50,929.80
  6. Step 6: Final answer
    x = 23,800.94

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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.