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Finding the Fourth Proportional to 77,846.69, 107,406.20 and 43,843.28

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Solution

The fourth proportional to 77,846.69, 107,406.20 and 43,843.28 is: 60,491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,846.69 : 107,406.20 = 43,843.28 : x
  2. Step 2: Convert to fraction form
    77,846.69/107,406.20 = 43,843.28/x
  3. Step 3: Cross multiply
    77,846.69x = 107,406.20 × 43,843.28
  4. Step 4: Simplify right side
    77,846.69x = 4,709,040,126.03
  5. Step 5: Solve for x
    x = 4,709,040,126.03/77,846.69
  6. Step 6: Final answer
    x = 60,491.21

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1.5x scale

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.