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Finding the Fourth Proportional to 123,481.44, 185,220.78 and 29,987.28

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Solution

The fourth proportional to 123,481.44, 185,220.78 and 29,987.28 is: 44,980.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,481.44 : 185,220.78 = 29,987.28 : x
  2. Step 2: Convert to fraction form
    123,481.44/185,220.78 = 29,987.28/x
  3. Step 3: Cross multiply
    123,481.44x = 185,220.78 × 29,987.28
  4. Step 4: Simplify right side
    123,481.44x = 5,554,267,391.68
  5. Step 5: Solve for x
    x = 5,554,267,391.68/123,481.44
  6. Step 6: Final answer
    x = 44,980.58

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1.5x scale

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.