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Finding the Fourth Proportional to 68,709.80, 103,053.90 and 24,330.20

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Solution

The fourth proportional to 68,709.80, 103,053.90 and 24,330.20 is: 36,491.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,709.80 : 103,053.90 = 24,330.20 : x
  2. Step 2: Convert to fraction form
    68,709.80/103,053.90 = 24,330.20/x
  3. Step 3: Cross multiply
    68,709.80x = 103,053.90 × 24,330.20
  4. Step 4: Simplify right side
    68,709.80x = 2,507,321,997.78
  5. Step 5: Solve for x
    x = 2,507,321,997.78/68,709.80
  6. Step 6: Final answer
    x = 36,491.48

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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.