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Finding the Fourth Proportional to 61,480.80, 92,221.20 and 19,366.20

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Solution

The fourth proportional to 61,480.80, 92,221.20 and 19,366.20 is: 29,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,480.80 : 92,221.20 = 19,366.20 : x
  2. Step 2: Convert to fraction form
    61,480.80/92,221.20 = 19,366.20/x
  3. Step 3: Cross multiply
    61,480.80x = 92,221.20 × 19,366.20
  4. Step 4: Simplify right side
    61,480.80x = 1,785,974,203.44
  5. Step 5: Solve for x
    x = 1,785,974,203.44/61,480.80
  6. Step 6: Final answer
    x = 29,049.30

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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.