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Finding the Fourth Proportional to 81,483.52, 122,260.13 and 34,109.68

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Solution

The fourth proportional to 81,483.52, 122,260.13 and 34,109.68 is: 51,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,483.52 : 122,260.13 = 34,109.68 : x
  2. Step 2: Convert to fraction form
    81,483.52/122,260.13 = 34,109.68/x
  3. Step 3: Cross multiply
    81,483.52x = 122,260.13 × 34,109.68
  4. Step 4: Simplify right side
    81,483.52x = 4,170,254,327.73
  5. Step 5: Solve for x
    x = 4,170,254,327.73/81,483.52
  6. Step 6: Final answer
    x = 51,179.11

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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.