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Finding the Fourth Proportional to 108,695.20, 162,841.20 and 61,808.80

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Solution

The fourth proportional to 108,695.20, 162,841.20 and 61,808.80 is: 92,598.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,695.20 : 162,841.20 = 61,808.80 : x
  2. Step 2: Convert to fraction form
    108,695.20/162,841.20 = 61,808.80/x
  3. Step 3: Cross multiply
    108,695.20x = 162,841.20 × 61,808.80
  4. Step 4: Simplify right side
    108,695.20x = 10,065,019,162.56
  5. Step 5: Solve for x
    x = 10,065,019,162.56/108,695.20
  6. Step 6: Final answer
    x = 92,598.56

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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.