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Finding the Fourth Proportional to 79,408.70, 109,562.60 and 45,410.18

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Solution

The fourth proportional to 79,408.70, 109,562.60 and 45,410.18 is: 62,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,408.70 : 109,562.60 = 45,410.18 : x
  2. Step 2: Convert to fraction form
    79,408.70/109,562.60 = 45,410.18/x
  3. Step 3: Cross multiply
    79,408.70x = 109,562.60 × 45,410.18
  4. Step 4: Simplify right side
    79,408.70x = 4,975,256,952.98
  5. Step 5: Solve for x
    x = 4,975,256,952.98/79,408.70
  6. Step 6: Final answer
    x = 62,653.80

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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.