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Finding the Fourth Proportional to 69,991.25, 104,997.45 and 22,590.50

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Solution

The fourth proportional to 69,991.25, 104,997.45 and 22,590.50 is: 33,889.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,991.25 : 104,997.45 = 22,590.50 : x
  2. Step 2: Convert to fraction form
    69,991.25/104,997.45 = 22,590.50/x
  3. Step 3: Cross multiply
    69,991.25x = 104,997.45 × 22,590.50
  4. Step 4: Simplify right side
    69,991.25x = 2,371,944,894.23
  5. Step 5: Solve for x
    x = 2,371,944,894.23/69,991.25
  6. Step 6: Final answer
    x = 33,889.16

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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.