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Finding the Fourth Proportional to 104,539.50, 156,828.69 and 49,135.50

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Solution

The fourth proportional to 104,539.50, 156,828.69 and 49,135.50 is: 73,712.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,539.50 : 156,828.69 = 49,135.50 : x
  2. Step 2: Convert to fraction form
    104,539.50/156,828.69 = 49,135.50/x
  3. Step 3: Cross multiply
    104,539.50x = 156,828.69 × 49,135.50
  4. Step 4: Simplify right side
    104,539.50x = 7,705,856,097.50
  5. Step 5: Solve for x
    x = 7,705,856,097.50/104,539.50
  6. Step 6: Final answer
    x = 73,712.39

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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.