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Finding the Fourth Proportional to 110,666.80, 166,021.80 and 47,486.80

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Solution

The fourth proportional to 110,666.80, 166,021.80 and 47,486.80 is: 71,239.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,666.80 : 166,021.80 = 47,486.80 : x
  2. Step 2: Convert to fraction form
    110,666.80/166,021.80 = 47,486.80/x
  3. Step 3: Cross multiply
    110,666.80x = 166,021.80 × 47,486.80
  4. Step 4: Simplify right side
    110,666.80x = 7,883,844,012.24
  5. Step 5: Solve for x
    x = 7,883,844,012.24/110,666.80
  6. Step 6: Final answer
    x = 71,239.47

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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.