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Finding the Fourth Proportional to 52,751.75, 79,127.63 and 17,691.31

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Solution

The fourth proportional to 52,751.75, 79,127.63 and 17,691.31 is: 26,536.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,751.75 : 79,127.63 = 17,691.31 : x
  2. Step 2: Convert to fraction form
    52,751.75/79,127.63 = 17,691.31/x
  3. Step 3: Cross multiply
    52,751.75x = 79,127.63 × 17,691.31
  4. Step 4: Simplify right side
    52,751.75x = 1,399,871,211.96
  5. Step 5: Solve for x
    x = 1,399,871,211.96/52,751.75
  6. Step 6: Final answer
    x = 26,536.96

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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.