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Finding the Fourth Proportional to 103,698.56, 155,608.22 and 43,723.27

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Solution

The fourth proportional to 103,698.56, 155,608.22 and 43,723.27 is: 65,610.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,698.56 : 155,608.22 = 43,723.27 : x
  2. Step 2: Convert to fraction form
    103,698.56/155,608.22 = 43,723.27/x
  3. Step 3: Cross multiply
    103,698.56x = 155,608.22 × 43,723.27
  4. Step 4: Simplify right side
    103,698.56x = 6,803,700,217.28
  5. Step 5: Solve for x
    x = 6,803,700,217.28/103,698.56
  6. Step 6: Final answer
    x = 65,610.36

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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.