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Finding the Fourth Proportional to 68,610.20, 103,088.10 and 43,662.20

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Solution

The fourth proportional to 68,610.20, 103,088.10 and 43,662.20 is: 65,603.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,610.20 : 103,088.10 = 43,662.20 : x
  2. Step 2: Convert to fraction form
    68,610.20/103,088.10 = 43,662.20/x
  3. Step 3: Cross multiply
    68,610.20x = 103,088.10 × 43,662.20
  4. Step 4: Simplify right side
    68,610.20x = 4,501,053,239.82
  5. Step 5: Solve for x
    x = 4,501,053,239.82/68,610.20
  6. Step 6: Final answer
    x = 65,603.27

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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.