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Finding the Fourth Proportional to 108,705.80, 163,058.70 and 29,819.90

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Solution

The fourth proportional to 108,705.80, 163,058.70 and 29,819.90 is: 44,729.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,705.80 : 163,058.70 = 29,819.90 : x
  2. Step 2: Convert to fraction form
    108,705.80/163,058.70 = 29,819.90/x
  3. Step 3: Cross multiply
    108,705.80x = 163,058.70 × 29,819.90
  4. Step 4: Simplify right side
    108,705.80x = 4,862,394,128.13
  5. Step 5: Solve for x
    x = 4,862,394,128.13/108,705.80
  6. Step 6: Final answer
    x = 44,729.85

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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.