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Finding the Fourth Proportional to 110,616.40, 165,742.20 and 63,787.60

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Solution

The fourth proportional to 110,616.40, 165,742.20 and 63,787.60 is: 95,576.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,616.40 : 165,742.20 = 63,787.60 : x
  2. Step 2: Convert to fraction form
    110,616.40/165,742.20 = 63,787.60/x
  3. Step 3: Cross multiply
    110,616.40x = 165,742.20 × 63,787.60
  4. Step 4: Simplify right side
    110,616.40x = 10,572,297,156.72
  5. Step 5: Solve for x
    x = 10,572,297,156.72/110,616.40
  6. Step 6: Final answer
    x = 95,576.22

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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.