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Finding the Fourth Proportional to 115,663.80, 173,636.10 and 73,543.80

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Solution

The fourth proportional to 115,663.80, 173,636.10 and 73,543.80 is: 110,404.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,663.80 : 173,636.10 = 73,543.80 : x
  2. Step 2: Convert to fraction form
    115,663.80/173,636.10 = 73,543.80/x
  3. Step 3: Cross multiply
    115,663.80x = 173,636.10 × 73,543.80
  4. Step 4: Simplify right side
    115,663.80x = 12,769,858,611.18
  5. Step 5: Solve for x
    x = 12,769,858,611.18/115,663.80
  6. Step 6: Final answer
    x = 110,404.97

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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.