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Finding the Fourth Proportional to 163,476.10, 225,603.66 and 91,855.90

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Solution

The fourth proportional to 163,476.10, 225,603.66 and 91,855.90 is: 126,764.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,476.10 : 225,603.66 = 91,855.90 : x
  2. Step 2: Convert to fraction form
    163,476.10/225,603.66 = 91,855.90/x
  3. Step 3: Cross multiply
    163,476.10x = 225,603.66 × 91,855.90
  4. Step 4: Simplify right side
    163,476.10x = 20,723,027,232.59
  5. Step 5: Solve for x
    x = 20,723,027,232.59/163,476.10
  6. Step 6: Final answer
    x = 126,764.87

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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.