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Finding the Fourth Proportional to 53,963.90, 80,913.45 and 27,719.90

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Solution

The fourth proportional to 53,963.90, 80,913.45 and 27,719.90 is: 41,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,963.90 : 80,913.45 = 27,719.90 : x
  2. Step 2: Convert to fraction form
    53,963.90/80,913.45 = 27,719.90/x
  3. Step 3: Cross multiply
    53,963.90x = 80,913.45 × 27,719.90
  4. Step 4: Simplify right side
    53,963.90x = 2,242,912,742.66
  5. Step 5: Solve for x
    x = 2,242,912,742.66/53,963.90
  6. Step 6: Final answer
    x = 41,563.21

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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.