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Finding the Fourth Proportional to 65,533.78, 98,301.75 and 18,786.66

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Solution

The fourth proportional to 65,533.78, 98,301.75 and 18,786.66 is: 28,180.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,533.78 : 98,301.75 = 18,786.66 : x
  2. Step 2: Convert to fraction form
    65,533.78/98,301.75 = 18,786.66/x
  3. Step 3: Cross multiply
    65,533.78x = 98,301.75 × 18,786.66
  4. Step 4: Simplify right side
    65,533.78x = 1,846,761,554.66
  5. Step 5: Solve for x
    x = 1,846,761,554.66/65,533.78
  6. Step 6: Final answer
    x = 28,180.30

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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.