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Finding the Fourth Proportional to 109,169.52, 150,655.32 and 61,422.96

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Solution

The fourth proportional to 109,169.52, 150,655.32 and 61,422.96 is: 84,764.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,169.52 : 150,655.32 = 61,422.96 : x
  2. Step 2: Convert to fraction form
    109,169.52/150,655.32 = 61,422.96/x
  3. Step 3: Cross multiply
    109,169.52x = 150,655.32 × 61,422.96
  4. Step 4: Simplify right side
    109,169.52x = 9,253,695,694.15
  5. Step 5: Solve for x
    x = 9,253,695,694.15/109,169.52
  6. Step 6: Final answer
    x = 84,764.46

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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.