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Finding the Fourth Proportional to 293,073.20, 404,455.56 and 172,221.20

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Solution

The fourth proportional to 293,073.20, 404,455.56 and 172,221.20 is: 237,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,073.20 : 404,455.56 = 172,221.20 : x
  2. Step 2: Convert to fraction form
    293,073.20/404,455.56 = 172,221.20/x
  3. Step 3: Cross multiply
    293,073.20x = 404,455.56 × 172,221.20
  4. Step 4: Simplify right side
    293,073.20x = 69,655,821,889.87
  5. Step 5: Solve for x
    x = 69,655,821,889.87/293,073.20
  6. Step 6: Final answer
    x = 237,673.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.