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Finding the Fourth Proportional to 108,996.42, 150,410.22 and 63,678.60

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Solution

The fourth proportional to 108,996.42, 150,410.22 and 63,678.60 is: 87,873.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,996.42 : 150,410.22 = 63,678.60 : x
  2. Step 2: Convert to fraction form
    108,996.42/150,410.22 = 63,678.60/x
  3. Step 3: Cross multiply
    108,996.42x = 150,410.22 × 63,678.60
  4. Step 4: Simplify right side
    108,996.42x = 9,577,912,235.29
  5. Step 5: Solve for x
    x = 9,577,912,235.29/108,996.42
  6. Step 6: Final answer
    x = 87,873.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.