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Finding the Fourth Proportional to 72,363.96, 99,865.44 and 45,496.26

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Solution

The fourth proportional to 72,363.96, 99,865.44 and 45,496.26 is: 62,786.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,363.96 : 99,865.44 = 45,496.26 : x
  2. Step 2: Convert to fraction form
    72,363.96/99,865.44 = 45,496.26/x
  3. Step 3: Cross multiply
    72,363.96x = 99,865.44 × 45,496.26
  4. Step 4: Simplify right side
    72,363.96x = 4,543,504,023.25
  5. Step 5: Solve for x
    x = 4,543,504,023.25/72,363.96
  6. Step 6: Final answer
    x = 62,786.84

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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.