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Finding the Fourth Proportional to 109,197.66, 150,669.52 and 63,866.79

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Solution

The fourth proportional to 109,197.66, 150,669.52 and 63,866.79 is: 88,122.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,197.66 : 150,669.52 = 63,866.79 : x
  2. Step 2: Convert to fraction form
    109,197.66/150,669.52 = 63,866.79/x
  3. Step 3: Cross multiply
    109,197.66x = 150,669.52 × 63,866.79
  4. Step 4: Simplify right side
    109,197.66x = 9,622,778,370.80
  5. Step 5: Solve for x
    x = 9,622,778,370.80/109,197.66
  6. Step 6: Final answer
    x = 88,122.57

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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.