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Finding the Fourth Proportional to 104,617.52, 156,837.84 and 45,408.68

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Solution

The fourth proportional to 104,617.52, 156,837.84 and 45,408.68 is: 68,074.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,617.52 : 156,837.84 = 45,408.68 : x
  2. Step 2: Convert to fraction form
    104,617.52/156,837.84 = 45,408.68/x
  3. Step 3: Cross multiply
    104,617.52x = 156,837.84 × 45,408.68
  4. Step 4: Simplify right side
    104,617.52x = 7,121,799,288.45
  5. Step 5: Solve for x
    x = 7,121,799,288.45/104,617.52
  6. Step 6: Final answer
    x = 68,074.63

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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.