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Finding the Fourth Proportional to 104,645.30, 156,964.43 and 45,480.96

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Solution

The fourth proportional to 104,645.30, 156,964.43 and 45,480.96 is: 68,219.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,645.30 : 156,964.43 = 45,480.96 : x
  2. Step 2: Convert to fraction form
    104,645.30/156,964.43 = 45,480.96/x
  3. Step 3: Cross multiply
    104,645.30x = 156,964.43 × 45,480.96
  4. Step 4: Simplify right side
    104,645.30x = 7,138,892,962.25
  5. Step 5: Solve for x
    x = 7,138,892,962.25/104,645.30
  6. Step 6: Final answer
    x = 68,219.91

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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.