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Finding the Fourth Proportional to 108,388.80, 162,583.20 and 61,732.80

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Solution

The fourth proportional to 108,388.80, 162,583.20 and 61,732.80 is: 92,599.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,388.80 : 162,583.20 = 61,732.80 : x
  2. Step 2: Convert to fraction form
    108,388.80/162,583.20 = 61,732.80/x
  3. Step 3: Cross multiply
    108,388.80x = 162,583.20 × 61,732.80
  4. Step 4: Simplify right side
    108,388.80x = 10,036,716,168.96
  5. Step 5: Solve for x
    x = 10,036,716,168.96/108,388.80
  6. Step 6: Final answer
    x = 92,599.20

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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.