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Finding the Fourth Proportional to 75,331.64, 103,846.64 and 57,395.54

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Solution

The fourth proportional to 75,331.64, 103,846.64 and 57,395.54 is: 79,121.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,331.64 : 103,846.64 = 57,395.54 : x
  2. Step 2: Convert to fraction form
    75,331.64/103,846.64 = 57,395.54/x
  3. Step 3: Cross multiply
    75,331.64x = 103,846.64 × 57,395.54
  4. Step 4: Simplify right side
    75,331.64x = 5,960,333,173.77
  5. Step 5: Solve for x
    x = 5,960,333,173.77/75,331.64
  6. Step 6: Final answer
    x = 79,121.25

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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.