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Finding the Fourth Proportional to 108,705.60, 163,058.40 and 73,276.20

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Solution

The fourth proportional to 108,705.60, 163,058.40 and 73,276.20 is: 109,914.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,705.60 : 163,058.40 = 73,276.20 : x
  2. Step 2: Convert to fraction form
    108,705.60/163,058.40 = 73,276.20/x
  3. Step 3: Cross multiply
    108,705.60x = 163,058.40 × 73,276.20
  4. Step 4: Simplify right side
    108,705.60x = 11,948,299,930.08
  5. Step 5: Solve for x
    x = 11,948,299,930.08/108,705.60
  6. Step 6: Final answer
    x = 109,914.30

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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.