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Finding the Fourth Proportional to 79,198.48, 109,297.50 and 45,216.16

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Solution

The fourth proportional to 79,198.48, 109,297.50 and 45,216.16 is: 62,400.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,198.48 : 109,297.50 = 45,216.16 : x
  2. Step 2: Convert to fraction form
    79,198.48/109,297.50 = 45,216.16/x
  3. Step 3: Cross multiply
    79,198.48x = 109,297.50 × 45,216.16
  4. Step 4: Simplify right side
    79,198.48x = 4,942,013,247.60
  5. Step 5: Solve for x
    x = 4,942,013,247.60/79,198.48
  6. Step 6: Final answer
    x = 62,400.35

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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.