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Finding the Fourth Proportional to 103,803.20, 155,647.20 and 44,628.80

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Solution

The fourth proportional to 103,803.20, 155,647.20 and 44,628.80 is: 66,918.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,803.20 : 155,647.20 = 44,628.80 : x
  2. Step 2: Convert to fraction form
    103,803.20/155,647.20 = 44,628.80/x
  3. Step 3: Cross multiply
    103,803.20x = 155,647.20 × 44,628.80
  4. Step 4: Simplify right side
    103,803.20x = 6,946,347,759.36
  5. Step 5: Solve for x
    x = 6,946,347,759.36/103,803.20
  6. Step 6: Final answer
    x = 66,918.44

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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.