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Finding the Fourth Proportional to 108,714.20, 163,071.30 and 73,284.80

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Solution

The fourth proportional to 108,714.20, 163,071.30 and 73,284.80 is: 109,927.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,714.20 : 163,071.30 = 73,284.80 : x
  2. Step 2: Convert to fraction form
    108,714.20/163,071.30 = 73,284.80/x
  3. Step 3: Cross multiply
    108,714.20x = 163,071.30 × 73,284.80
  4. Step 4: Simplify right side
    108,714.20x = 11,950,647,606.24
  5. Step 5: Solve for x
    x = 11,950,647,606.24/108,714.20
  6. Step 6: Final answer
    x = 109,927.20

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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.