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Finding the Fourth Proportional to 78,690.56, 118,064.99 and 36,593.24

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Solution

The fourth proportional to 78,690.56, 118,064.99 and 36,593.24 is: 54,903.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,690.56 : 118,064.99 = 36,593.24 : x
  2. Step 2: Convert to fraction form
    78,690.56/118,064.99 = 36,593.24/x
  3. Step 3: Cross multiply
    78,690.56x = 118,064.99 × 36,593.24
  4. Step 4: Simplify right side
    78,690.56x = 4,320,380,015.83
  5. Step 5: Solve for x
    x = 4,320,380,015.83/78,690.56
  6. Step 6: Final answer
    x = 54,903.41

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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.