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Finding the Fourth Proportional to 68,828.90, 103,239.63 and 22,078.13

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Solution

The fourth proportional to 68,828.90, 103,239.63 and 22,078.13 is: 33,116.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,828.90 : 103,239.63 = 22,078.13 : x
  2. Step 2: Convert to fraction form
    68,828.90/103,239.63 = 22,078.13/x
  3. Step 3: Cross multiply
    68,828.90x = 103,239.63 × 22,078.13
  4. Step 4: Simplify right side
    68,828.90x = 2,279,337,456.09
  5. Step 5: Solve for x
    x = 2,279,337,456.09/68,828.90
  6. Step 6: Final answer
    x = 33,116.00

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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.