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Finding the Fourth Proportional to 45,556.80, 68,335.20 and 43,807.20

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Solution

The fourth proportional to 45,556.80, 68,335.20 and 43,807.20 is: 65,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,556.80 : 68,335.20 = 43,807.20 : x
  2. Step 2: Convert to fraction form
    45,556.80/68,335.20 = 43,807.20/x
  3. Step 3: Cross multiply
    45,556.80x = 68,335.20 × 43,807.20
  4. Step 4: Simplify right side
    45,556.80x = 2,993,573,773.44
  5. Step 5: Solve for x
    x = 2,993,573,773.44/45,556.80
  6. Step 6: Final answer
    x = 65,710.80

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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.