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Finding the Fourth Proportional to 45,698.80, 68,548.20 and 43,949.20

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Solution

The fourth proportional to 45,698.80, 68,548.20 and 43,949.20 is: 65,923.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,698.80 : 68,548.20 = 43,949.20 : x
  2. Step 2: Convert to fraction form
    45,698.80/68,548.20 = 43,949.20/x
  3. Step 3: Cross multiply
    45,698.80x = 68,548.20 × 43,949.20
  4. Step 4: Simplify right side
    45,698.80x = 3,012,638,551.44
  5. Step 5: Solve for x
    x = 3,012,638,551.44/45,698.80
  6. Step 6: Final answer
    x = 65,923.80

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Similar ratio
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1.5x scale

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.