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Finding the Fourth Proportional to 322,699.23, 484,048.89 and 86,042.79

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Solution

The fourth proportional to 322,699.23, 484,048.89 and 86,042.79 is: 129,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,699.23 : 484,048.89 = 86,042.79 : x
  2. Step 2: Convert to fraction form
    322,699.23/484,048.89 = 86,042.79/x
  3. Step 3: Cross multiply
    322,699.23x = 484,048.89 × 86,042.79
  4. Step 4: Simplify right side
    322,699.23x = 41,648,916,992.00
  5. Step 5: Solve for x
    x = 41,648,916,992.00/322,699.23
  6. Step 6: Final answer
    x = 129,064.20

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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.