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Finding the Fourth Proportional to 108,704.70, 162,855.45 and 61,818.30

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Solution

The fourth proportional to 108,704.70, 162,855.45 and 61,818.30 is: 92,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,704.70 : 162,855.45 = 61,818.30 : x
  2. Step 2: Convert to fraction form
    108,704.70/162,855.45 = 61,818.30/x
  3. Step 3: Cross multiply
    108,704.70x = 162,855.45 × 61,818.30
  4. Step 4: Simplify right side
    108,704.70x = 10,067,447,064.74
  5. Step 5: Solve for x
    x = 10,067,447,064.74/108,704.70
  6. Step 6: Final answer
    x = 92,612.80

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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.