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Finding the Fourth Proportional to 108,798.30, 162,880.44 and 80,842.28

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Solution

The fourth proportional to 108,798.30, 162,880.44 and 80,842.28 is: 121,027.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,798.30 : 162,880.44 = 80,842.28 : x
  2. Step 2: Convert to fraction form
    108,798.30/162,880.44 = 80,842.28/x
  3. Step 3: Cross multiply
    108,798.30x = 162,880.44 × 80,842.28
  4. Step 4: Simplify right side
    108,798.30x = 13,167,626,137.00
  5. Step 5: Solve for x
    x = 13,167,626,137.00/108,798.30
  6. Step 6: Final answer
    x = 121,027.87

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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.