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Finding the Fourth Proportional to 204,899.28, 307,403.64 and 64,660.56

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Solution

The fourth proportional to 204,899.28, 307,403.64 and 64,660.56 is: 97,008.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,899.28 : 307,403.64 = 64,660.56 : x
  2. Step 2: Convert to fraction form
    204,899.28/307,403.64 = 64,660.56/x
  3. Step 3: Cross multiply
    204,899.28x = 307,403.64 × 64,660.56
  4. Step 4: Simplify right side
    204,899.28x = 19,876,891,508.44
  5. Step 5: Solve for x
    x = 19,876,891,508.44/204,899.28
  6. Step 6: Final answer
    x = 97,008.11

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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.