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Finding the Fourth Proportional to 49,602.80, 74,404.20 and 39,105.20

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Solution

The fourth proportional to 49,602.80, 74,404.20 and 39,105.20 is: 58,657.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,602.80 : 74,404.20 = 39,105.20 : x
  2. Step 2: Convert to fraction form
    49,602.80/74,404.20 = 39,105.20/x
  3. Step 3: Cross multiply
    49,602.80x = 74,404.20 × 39,105.20
  4. Step 4: Simplify right side
    49,602.80x = 2,909,591,121.84
  5. Step 5: Solve for x
    x = 2,909,591,121.84/49,602.80
  6. Step 6: Final answer
    x = 58,657.80

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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.