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Finding the Fourth Proportional to 52,911.36, 79,731.11 and 43,757.23

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Solution

The fourth proportional to 52,911.36, 79,731.11 and 43,757.23 is: 65,936.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,911.36 : 79,731.11 = 43,757.23 : x
  2. Step 2: Convert to fraction form
    52,911.36/79,731.11 = 43,757.23/x
  3. Step 3: Cross multiply
    52,911.36x = 79,731.11 × 43,757.23
  4. Step 4: Simplify right side
    52,911.36x = 3,488,812,518.43
  5. Step 5: Solve for x
    x = 3,488,812,518.43/52,911.36
  6. Step 6: Final answer
    x = 65,936.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.